The Novembertagung on the History and Philosophy of Mathematics is an annual international conference aimed at graduate students in the history and philosophy of mathematics and neighboring fields. It provides an opportunity for young researchers to present and discuss their research in a safe, informal environment, and serves as a place for them to share experience and advice, as well as to establish new contacts. Participants are welcome from around the world.

On the Theme: Crisis, instability and times of uncertainty undoubtedly influenced the development of the sciences, and mathematics is no exception. Throughout history, mathematicians found themselves facing wide-ranging challenges, both internal and external to mathematics, to which they had to respond in new and creative ways. Inspired by contemporary global events, this conference is interested in the ways that times of crisis shaped the development of mathematics. The time of uncertainty might be frustrating and confounding for the mathematicians, but from a historical perspective it can be viewed as an engine of mathematical creativity.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

CSR is an annual international conference held in Russia that is designed to cover a broad range of topics in Theoretical Computer Science.

Topics include, but are not limited to: (i) algorithms and data structures (ii) computational complexity, including hardness of approximation and parameterized complexity (iii) randomness in computing, approximation algorithms, fixed-parameter algorithms (iv) combinatorial optimization, constraint satisfaction, operations research (v) computational geometry (vi) string algorithms (vii) formal languages and automata, including applications to computational linguistics (viii) codes and cryptography (ix) combinatorics in computer science (x) computational biology (xi) applications of logic to computer science, proof complexity (xii) database theory (xiii) distributed computing (xiv) fundamentals of machine learning, including learning theory, grammatical inference and neural computing (xv) computational social choice (xvi) quantum computing and quantum cryptography (xvii) theoretical aspects of big data.

Opening lecture: Tim Roughgarden (Columbia University, USA).

Formal Concept Analysis emerged in the 1980's from attempts to restructure lattice theory in order to promote better communication between lattice theorists and potential users of lattice theory. Since its early years, Formal Concept Analysis has developed into a research field in its own right with a thriving theoretical community and a rapidly expanding range of applications in information and knowledge processing including visualization, data analysis (mining) and knowledge management and discovery.

The ICFCA conference series aims at bringing together researchers and practitioners working on theoretical or applied aspects of Formal Concept Analysis within major related areas such as Mathematics and Computer and Information Sciences and their diverse applications to fields like Software Engineering, Linguistics, Life and Social Sciences, etc.

The meeting will be held as a Virtual Conference, through Zoom provided by Chapman University. Participation is free, but in order to join the meeting, please register. Keynote speakers: Laura Crosilla (University of Oslo, Norway), Andrew Granville (Universite de Montréal, Canada)), Orna Harari (Tel Aviv University, Israel) and Dirk Schlimm (McGill University, Canada).

The problem of explaining why a consequence does or does not follow from a given set of axioms has been considered for full first-order theorem proving since at least 40 years, but there usually with mathematicians as users in mind. In knowledge representation and reasoning, efforts in this direction are more recent, and were usually restricted to sub-areas of KR such as AI planning and description logics. The purpose of this workshop is to bring together researchers from different sub-areas of KR and automated deduction that are working on explainability in their respective fields, with the goal of exchanging experiences and approaches.

Sheila McIlraith and Joe Halpern will deliver the keynotes. The workshop will be co-located with KR 2021.

CSR is an annual international conference held in Russia that is designed to cover a broad range of topics in Theoretical Computer Science.

Topics include, but are not limited to: (i) algorithms and data structures (ii) computational complexity, including hardness of approximation and parameterized complexity (iii) randomness in computing, approximation algorithms, fixed-parameter algorithms (iv) combinatorial optimization, constraint satisfaction, operations research (v) computational geometry (vi) string algorithms (vii) formal languages and automata, including applications to computational linguistics (viii) codes and cryptography (ix) combinatorics in computer science (x) computational biology (xi) applications of logic to computer science, proof complexity (xii) database theory (xiii) distributed computing (xiv) fundamentals of machine learning, including learning theory, grammatical inference and neural computing (xv) computational social choice (xvi) quantum computing and quantum cryptography (xvii) theoretical aspects of big data.

Opening lecture: Tim Roughgarden (Columbia University, USA).

Formal Concept Analysis emerged in the 1980's from attempts to restructure lattice theory in order to promote better communication between lattice theorists and potential users of lattice theory. Since its early years, Formal Concept Analysis has developed into a research field in its own right with a thriving theoretical community and a rapidly expanding range of applications in information and knowledge processing including visualization, data analysis (mining) and knowledge management and discovery.

The ICFCA conference series aims at bringing together researchers and practitioners working on theoretical or applied aspects of Formal Concept Analysis within major related areas such as Mathematics and Computer and Information Sciences and their diverse applications to fields like Software Engineering, Linguistics, Life and Social Sciences, etc.

The meeting will be held as a Virtual Conference, through Zoom provided by Chapman University. Participation is free, but in order to join the meeting, please register. Keynote speakers: Laura Crosilla (University of Oslo, Norway), Andrew Granville (Universite de Montréal, Canada)), Orna Harari (Tel Aviv University, Israel) and Dirk Schlimm (McGill University, Canada).

The purpose of the workshop is to bridge the gap between the cognitive sciences and research on ontologies and, thus, to create a venue for researchers interested in interdisciplinary aspects of knowledge representation. More specifically CAOS investigates how key cognitive phenomena and concepts (and the involved terminology) can be found across language, psychology and reasoning and how they can be formally and ontologically understood and analysed. It moreover seeks answers to ways such formalisations and ontological analysis can be exploited in Artificial Intelligence and information systems in general.

CAOS 2021 is going to happen at the Bolzano Summer of Knowledge, BOSK 2021, in September 2021, organised as a FOIS 2021 workshop.  CAOS 2021 is planned as a hybrid event.

The meeting will be held as a Virtual Conference, through Zoom provided by Chapman University. Participation is free, but in order to join the meeting, please register. Keynote speakers: Laura Crosilla (University of Oslo, Norway), Andrew Granville (Universite de Montréal, Canada)), Orna Harari (Tel Aviv University, Israel) and Dirk Schlimm (McGill University, Canada).

Computer Science Logic (CSL) is the annual conference of the European Association for Computer Science Logic (EACSL). It is an interdisciplinary conference, spanning across both basic and application oriented research in mathematical logic and computer science.

CSL'22 will be held on February 14 - 19, 2022, in Göttingen, Germany. Currently, we expect that the conference will be organized in a hybrid way: both with an in-presence component and an online component. Invited speakers: Annabelle McIver Macquarie (University, Sydney, Australia), Udi Boker (IDC Herzliya, Israel), Martin Escardo (University of Birmingham, UK), Rosalie Iemhoff (Utrecht University, The Netherlands) and Karen Lange (Wellesley College, USA).

CiE 2021 is the seventeenth conference organized by the Association Computability in Europe. The 'Computability in Europe' conference (CiE) series has built up a strong tradition for developing a scientific program which is interdisciplinary at its core bringing together all aspects of computability and foundations of computer science, as well as the interplay of these theoretical areas with practical issues in CS and other disciplines such as biology, mathematics, history, philosophy, and physics.

Due to the current pandemic CiE 2021 will be held as a virtual conference. CiE 2021 will be the second CiE conference that is organized as a virtual event and aims at a high-quality meeting that allows and invites active participation from all participants. It will be hosted virtually by Ghent University.

Quantified Boolean formulas (QBF) are an extension of propositional logic which allows for explicit quantification over propositional variables. Many problems from application domains such as model checking, formal verification or synthesis are PSPACE-complete, and hence could be encoded in QBF in a natural way. However, in contrast to SAT, QBF is not yet widely applied to practical problems in academic or industrial settings. The goal of the International Workshop on Quantified Boolean Formulas (QBF Workshop) is to bring together researchers working on theoretical and practical aspects of QBF solving. In addition to that, it addresses (potential) users of QBF in order to reflect on the state-of-the-art and to consolidate on immediate and long-term research challenges.

QBF 2021 is affiliated to and co-located with: Int. Conf. on Theory and Applications of Satisfiability Testing (SAT 2021) July 5-9, 2021. The workshop also welcomes work on reasoning with quantifiers in related problems, such as dependency QBF (DQBF), quantified constraint satisfaction problems (QCSP), and satisfiability modulo theories (SMT) with quantifiers.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CiE 2021 is the seventeenth conference organized by the Association Computability in Europe. The 'Computability in Europe' conference (CiE) series has built up a strong tradition for developing a scientific program which is interdisciplinary at its core bringing together all aspects of computability and foundations of computer science, as well as the interplay of these theoretical areas with practical issues in CS and other disciplines such as biology, mathematics, history, philosophy, and physics.

Due to the current pandemic CiE 2021 will be held as a virtual conference. CiE 2021 will be the second CiE conference that is organized as a virtual event and aims at a high-quality meeting that allows and invites active participation from all participants. It will be hosted virtually by Ghent University.

Quantified Boolean formulas (QBF) are an extension of propositional logic which allows for explicit quantification over propositional variables. Many problems from application domains such as model checking, formal verification or synthesis are PSPACE-complete, and hence could be encoded in QBF in a natural way. However, in contrast to SAT, QBF is not yet widely applied to practical problems in academic or industrial settings. The goal of the International Workshop on Quantified Boolean Formulas (QBF Workshop) is to bring together researchers working on theoretical and practical aspects of QBF solving. In addition to that, it addresses (potential) users of QBF in order to reflect on the state-of-the-art and to consolidate on immediate and long-term research challenges.

QBF 2021 is affiliated to and co-located with: Int. Conf. on Theory and Applications of Satisfiability Testing (SAT 2021) July 5-9, 2021. The workshop also welcomes work on reasoning with quantifiers in related problems, such as dependency QBF (DQBF), quantified constraint satisfaction problems (QCSP), and satisfiability modulo theories (SMT) with quantifiers.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CiE 2021 is the seventeenth conference organized by the Association Computability in Europe. The 'Computability in Europe' conference (CiE) series has built up a strong tradition for developing a scientific program which is interdisciplinary at its core bringing together all aspects of computability and foundations of computer science, as well as the interplay of these theoretical areas with practical issues in CS and other disciplines such as biology, mathematics, history, philosophy, and physics.

Due to the current pandemic CiE 2021 will be held as a virtual conference. CiE 2021 will be the second CiE conference that is organized as a virtual event and aims at a high-quality meeting that allows and invites active participation from all participants. It will be hosted virtually by Ghent University.

Quantified Boolean formulas (QBF) are an extension of propositional logic which allows for explicit quantification over propositional variables. Many problems from application domains such as model checking, formal verification or synthesis are PSPACE-complete, and hence could be encoded in QBF in a natural way. However, in contrast to SAT, QBF is not yet widely applied to practical problems in academic or industrial settings. The goal of the International Workshop on Quantified Boolean Formulas (QBF Workshop) is to bring together researchers working on theoretical and practical aspects of QBF solving. In addition to that, it addresses (potential) users of QBF in order to reflect on the state-of-the-art and to consolidate on immediate and long-term research challenges.

QBF 2021 is affiliated to and co-located with: Int. Conf. on Theory and Applications of Satisfiability Testing (SAT 2021) July 5-9, 2021. The workshop also welcomes work on reasoning with quantifiers in related problems, such as dependency QBF (DQBF), quantified constraint satisfaction problems (QCSP), and satisfiability modulo theories (SMT) with quantifiers.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CiE 2021 is the seventeenth conference organized by the Association Computability in Europe. The 'Computability in Europe' conference (CiE) series has built up a strong tradition for developing a scientific program which is interdisciplinary at its core bringing together all aspects of computability and foundations of computer science, as well as the interplay of these theoretical areas with practical issues in CS and other disciplines such as biology, mathematics, history, philosophy, and physics.

Due to the current pandemic CiE 2021 will be held as a virtual conference. CiE 2021 will be the second CiE conference that is organized as a virtual event and aims at a high-quality meeting that allows and invites active participation from all participants. It will be hosted virtually by Ghent University.

Quantified Boolean formulas (QBF) are an extension of propositional logic which allows for explicit quantification over propositional variables. Many problems from application domains such as model checking, formal verification or synthesis are PSPACE-complete, and hence could be encoded in QBF in a natural way. However, in contrast to SAT, QBF is not yet widely applied to practical problems in academic or industrial settings. The goal of the International Workshop on Quantified Boolean Formulas (QBF Workshop) is to bring together researchers working on theoretical and practical aspects of QBF solving. In addition to that, it addresses (potential) users of QBF in order to reflect on the state-of-the-art and to consolidate on immediate and long-term research challenges.

QBF 2021 is affiliated to and co-located with: Int. Conf. on Theory and Applications of Satisfiability Testing (SAT 2021) July 5-9, 2021. The workshop also welcomes work on reasoning with quantifiers in related problems, such as dependency QBF (DQBF), quantified constraint satisfaction problems (QCSP), and satisfiability modulo theories (SMT) with quantifiers.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CiE 2021 is the seventeenth conference organized by the Association Computability in Europe. The 'Computability in Europe' conference (CiE) series has built up a strong tradition for developing a scientific program which is interdisciplinary at its core bringing together all aspects of computability and foundations of computer science, as well as the interplay of these theoretical areas with practical issues in CS and other disciplines such as biology, mathematics, history, philosophy, and physics.

Due to the current pandemic CiE 2021 will be held as a virtual conference. CiE 2021 will be the second CiE conference that is organized as a virtual event and aims at a high-quality meeting that allows and invites active participation from all participants. It will be hosted virtually by Ghent University.

Quantified Boolean formulas (QBF) are an extension of propositional logic which allows for explicit quantification over propositional variables. Many problems from application domains such as model checking, formal verification or synthesis are PSPACE-complete, and hence could be encoded in QBF in a natural way. However, in contrast to SAT, QBF is not yet widely applied to practical problems in academic or industrial settings. The goal of the International Workshop on Quantified Boolean Formulas (QBF Workshop) is to bring together researchers working on theoretical and practical aspects of QBF solving. In addition to that, it addresses (potential) users of QBF in order to reflect on the state-of-the-art and to consolidate on immediate and long-term research challenges.

QBF 2021 is affiliated to and co-located with: Int. Conf. on Theory and Applications of Satisfiability Testing (SAT 2021) July 5-9, 2021. The workshop also welcomes work on reasoning with quantifiers in related problems, such as dependency QBF (DQBF), quantified constraint satisfaction problems (QCSP), and satisfiability modulo theories (SMT) with quantifiers.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

This meeting stands in the tradition of an informal series of meetings of scholars interested in cultural aspects of mathematical research practice, attracting a community of scholars from mathematics, philosophy, mathematics education, sociology, anthropology, automated reasoning, and history of mathematics. Participants of these gatherings were interested in developing a view of mathematics on the basis of empirical observations of the practices of mathematicians, taking into account the fact that cultures and practices of mathematics vary over time, space, and research community.

Invite speakers:Jessica Bradford, Nina Engelhardt, Christian Greiffenhagen, Matthew Inglis, Mikkel Willum Johansen and Norbert Schappacher.

CLAR 2021 will be held in Hangzhou at Zhejiang University City College. Due to the uncertainties of the epidemiological situation, the conference will be held in a HYBRID format (virtual and physical attendance both accepted), and we encourage physical participation if possible.

The CLAR 2021 conference will highlight recent advances in logic and argumentation and foster interaction between these areas within and outside China.

The topic of the conference is the study of the notion of explanation in the context of logic and philosophy. Particular attention will be devoted to the history of the investigation on explanation, to the connections with conceptual and metaphysical grounding, and to related philosophical issues such as logical pluralism and anti-exceptionalism about logic. The conference is organised in the framework of the ANR JCJC project Bolzano's Insights. The conference will be held online through Zoom and will be open to anyone who is interested.

Keynote speakers:

- Fabrice Correia (University of Geneva, Switzerland)
- Orna Harari (Tel Aviv University, Israel)
- Ole Hjortland (University of Bergen, Norway)
- Carrie Jenkins (University of British Columbia, Canada)

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

This meeting stands in the tradition of an informal series of meetings of scholars interested in cultural aspects of mathematical research practice, attracting a community of scholars from mathematics, philosophy, mathematics education, sociology, anthropology, automated reasoning, and history of mathematics. Participants of these gatherings were interested in developing a view of mathematics on the basis of empirical observations of the practices of mathematicians, taking into account the fact that cultures and practices of mathematics vary over time, space, and research community.

Invite speakers:Jessica Bradford, Nina Engelhardt, Christian Greiffenhagen, Matthew Inglis, Mikkel Willum Johansen and Norbert Schappacher.

Computer Theorem Proving is becoming a paradigm as well as a technological base for a new generation of educational software in science, technology, engineering and mathematics. The workshop brings together experts in automated deduction with experts in education in order to further clarify the shape of the new software generation and to discuss existing systems.

ThEdu'21 will be virtual as part of the 28th International Conference on Automated Deduction (CADE-28), the exact details will be in the workshop Web-page as soon as possible. Invited Talk: Gilles Dowek, ENS Paris-Saclay.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

This meeting stands in the tradition of an informal series of meetings of scholars interested in cultural aspects of mathematical research practice, attracting a community of scholars from mathematics, philosophy, mathematics education, sociology, anthropology, automated reasoning, and history of mathematics. Participants of these gatherings were interested in developing a view of mathematics on the basis of empirical observations of the practices of mathematicians, taking into account the fact that cultures and practices of mathematics vary over time, space, and research community.

Invite speakers:Jessica Bradford, Nina Engelhardt, Christian Greiffenhagen, Matthew Inglis, Mikkel Willum Johansen and Norbert Schappacher.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

Online instruction of formal methods has been a challenge in the last year, including teaching of basics of logics and automata theory, formal verification, theorem proving etc. This satellite workshop of ICALP brings together instructors of formal methods as well as developers of teaching support systems for formal methods to (1) present tools supporting teaching of formal methods education, and (2) discuss tips, tricks & experiences in online instruction gained in the last year.

Stateful entities offer services in a non-uniform way (one cannot pop from an empty stack). Traditional type systems cannot guarantee that operations are only invoked when the entity is in the right state. Session types are abstract representations of the sequences of operations that computational entities (such as channels or objects) must perform. Although the foundations of session types are now well established, and new works build on approaches that have become standard, there is still a lack of reusable libraries, namely machine-verified ones.

The goal of the VEST workshop is to gather the researchers working on mechanisations of behavioural types using various theorem provers, such as Agda, Coq, Isabelle or any other. The workshop will be a platform to present both the now well-established efforts and the ongoing works the community has put on verification. The workshop will also be a forum to discuss strengths and weaknesses of existing approaches, potential obstacles and to foster collaboration.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

ICALP is the main conference and annual meeting of the European Association for Theoretical Computer Science (EATCS). As usual, ICALP will be preceded by a series of workshops, which will take place on 12 July 2021.

We are closely monitoring the development of the COVID-19 pandemic. If it is not viable to hold ICALP 2021 as a physical conference, we will run it virtually on the same dates. We will decide in January 2021 at the latest.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

ICALP is the main conference and annual meeting of the European Association for Theoretical Computer Science (EATCS). As usual, ICALP will be preceded by a series of workshops, which will take place on 12 July 2021.

We are closely monitoring the development of the COVID-19 pandemic. If it is not viable to hold ICALP 2021 as a physical conference, we will run it virtually on the same dates. We will decide in January 2021 at the latest.

There are several new and rapidly evolving research areas blossoming out from the interaction of logic and relativity theory. The aim of this conference series, which take place once every 2 or 3 years, is to attract and bring together mathematicians, physicists, philosophers of science, and logicians from all over the world interested in these and related areas to exchange new ideas, problems and results. The spirit of this conference series goes back to the Vienna Circle and Tarski's initiative Logic, Methodology and Philosophy of Science. We aim to provide a friendly atmosphere that enables fruitful interdisciplinary cooperation leading to joint research and publications.

Due to the Covid-19 pandemic, we had to delay the LRB20 conference last year. We decided to make up for it this summer.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

ICALP is the main conference and annual meeting of the European Association for Theoretical Computer Science (EATCS). As usual, ICALP will be preceded by a series of workshops, which will take place on 12 July 2021.

We are closely monitoring the development of the COVID-19 pandemic. If it is not viable to hold ICALP 2021 as a physical conference, we will run it virtually on the same dates. We will decide in January 2021 at the latest.

There are several new and rapidly evolving research areas blossoming out from the interaction of logic and relativity theory. The aim of this conference series, which take place once every 2 or 3 years, is to attract and bring together mathematicians, physicists, philosophers of science, and logicians from all over the world interested in these and related areas to exchange new ideas, problems and results. The spirit of this conference series goes back to the Vienna Circle and Tarski's initiative Logic, Methodology and Philosophy of Science. We aim to provide a friendly atmosphere that enables fruitful interdisciplinary cooperation leading to joint research and publications.

Due to the Covid-19 pandemic, we had to delay the LRB20 conference last year. We decided to make up for it this summer.

Rewriting is a powerful model of computation that underlies much of declarative programming and is ubiquitous in mathematics, logic, theorem proving, verification, model-checking, compilation, biology, chemistry, physics, etc. In 2021, the 12th International School on Rewriting (ISR 2021) will take place online as a virtual event hosted via zoom by the Computer Science School at Universidad Complutense de Madrid, Spain. The school is aimed at Master and PhD students, researchers and practitioners interested in the use or the study of rewriting and its applications.

CADE is the major international forum for presenting research on all aspects of automated deduction. High-quality submissions on the general topic of automated deduction, including logical foundations, theory and principles, applications in and beyond STEM, implementations, and the use/contribution of automated deduction in AI, are solicited. CADE-28 aims to present research that reflects the broad range of interesting and relevant topics in automated deduction.

CADE will carefully monitor the development of the COVID-19 pandemic, and take guidance from from the health authorities, to determine whether CADE-28 will be physical or online.

ICALP is the main conference and annual meeting of the European Association for Theoretical Computer Science (EATCS). As usual, ICALP will be preceded by a series of workshops, which will take place on 12 July 2021.

We are closely monitoring the development of the COVID-19 pandemic. If it is not viable to hold ICALP 2021 as a physical conference, we will run it virtually on the same dates. We will decide in January 2021 at the latest.

There are several new and rapidly evolving research areas blossoming out from the interaction of logic and relativity theory. The aim of this conference series, which take place once every 2 or 3 years, is to attract and bring together mathematicians, physicists, philosophers of science, and logicians from all over the world interested in these and related areas to exchange new ideas, problems and results. The spirit of this conference series goes back to the Vienna Circle and Tarski's initiative Logic, Methodology and Philosophy of Science. We aim to provide a friendly atmosphere that enables fruitful interdisciplinary cooperation leading to joint research and publications.

Due to the Covid-19 pandemic, we had to delay the LRB20 conference last year. We decided to make up for it this summer.

The main goal of this workshop is to bring together key people from various subcommunities of automated reasoning -such as SAT/SMT, resolution, tableaux, theory-specific calculi (e.g. for description logic, arithmetic, set theory), interactive theorem proving - to discuss the present, past, and future of the field. The intention is to provide an opportunity to discuss broad issues facing the community. What are the current challenges, applications, directions, or exemplary achievements of Automated Reasoning?

The structure of the workshop will be informal. At the event, contributions will be grouped into similar themes and authors will be invited to make their case within discussion panels. After the workshop, they will be welcome to extend their abstracts for inclusion in post-proceedings (EPiC or similar), taking into account the discussion.

There are several new and rapidly evolving research areas blossoming out from the interaction of logic and relativity theory. The aim of this conference series, which take place once every 2 or 3 years, is to attract and bring together mathematicians, physicists, philosophers of science, and logicians from all over the world interested in these and related areas to exchange new ideas, problems and results. The spirit of this conference series goes back to the Vienna Circle and Tarski's initiative Logic, Methodology and Philosophy of Science. We aim to provide a friendly atmosphere that enables fruitful interdisciplinary cooperation leading to joint research and publications.

Due to the Covid-19 pandemic, we had to delay the LRB20 conference last year. We decided to make up for it this summer.

ITRS workshops have been held every two years (with the exception of 2020). The ITRS 2021 workshop aims to bring together researchers working on both the theory and practical applications of systems based on intersection types and related approaches. Invited Speaker: Jeremy Siek (Indiana University Bloomington). ITRS 2021 is affiliated with FSCD.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

Unification is concerned with the problem of identifying given (first- or higher-order) terms, either syntactically or modulo a theory. It is a fundamental technique that is employed in various areas of Computer Science and Mathematics. In particular, unification algorithms are key components in completion of term rewriting systems, resolution-based theorem proving, and logic programming. But unification is, for example, also investigated in the context of natural language processing, program analysis, types, modal logics, and in knowledge representation.

UNIF 2021 is the 35th in a series of annual workshops on unification and related topics. Just as it predecessors', the purpose of UNIF 2021 is to bring together researchers interested in unification theory and its applications, as well as closely related topics, such as matching (i.e., one-sided unification), anti-unification (i.e., the dual problem to unification), disunification (i.e., solving equations and inequations) and the admissibility problem (which generalizes unification in modal logics). It will provide a forum for presenting recent (even unfinished) work, and discuss new ideas and trends in this and related fields. UNIF 2021 is associated with FSCD 2021 and will be a purely virtual event.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

Arguments vary in strength. The strength of an argument is affected by e.g. the plausibility of its premises, the nature of the link between its premises and conclusion, and the prior acceptability of the conclusion. The aim of this workshop is to bring together experts from the fields of artificial intelligence, philosophy, logic, and argumentation theory to discuss questions related to the strength of arguments.

Originally planned for 2020 in Koblenz, Germany, after consideration the organizers decided to postpone the workshop in light of the current COVID-19 crisis, and hold it online.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

The CIAA conferences concern research on all aspects of implementation and application of automata and related structures, including theoretical aspects. Automata theory is the foundation of computer science. Its applications have spread to almost all areas of computer science and many other disciplines. The purpose of these conferences is to bring together members of the academic, research and industrial community who have an interest in implementation and application of automata to demonstrate and analyze their work and to explain the problems they have been solving.

Note: Remote attendance will be possible, regardless of whether or not there will be a physical meeting.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

The CIAA conferences concern research on all aspects of implementation and application of automata and related structures, including theoretical aspects. Automata theory is the foundation of computer science. Its applications have spread to almost all areas of computer science and many other disciplines. The purpose of these conferences is to bring together members of the academic, research and industrial community who have an interest in implementation and application of automata to demonstrate and analyze their work and to explain the problems they have been solving.

Note: Remote attendance will be possible, regardless of whether or not there will be a physical meeting.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

The CIAA conferences concern research on all aspects of implementation and application of automata and related structures, including theoretical aspects. Automata theory is the foundation of computer science. Its applications have spread to almost all areas of computer science and many other disciplines. The purpose of these conferences is to bring together members of the academic, research and industrial community who have an interest in implementation and application of automata to demonstrate and analyze their work and to explain the problems they have been solving.

Note: Remote attendance will be possible, regardless of whether or not there will be a physical meeting.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

The progress in computer-aided reasoning, both automatic and interactive, during the past decades, has made it possible to build deduction tools that are increasingly more applicable to a wider range of problems and are able to tackle larger problems progressively faster. In recent years, cooperation of such tools in larger verification environments has demonstrated the potential to reduce the amount of manual intervention. Examples include the Sledgehammer tool providing an interface between Isabelle and (untrusted) automated provers, and collaboration of the HOL Light and Isabelle systems in the formal proof of the Kepler conjecture.

Cooperation between reasoning systems relies on availability of theoretical formalisms and practical tools for exchanging problems, proofs, and models. The PxTP workshop strives to encourage such cooperation by inviting contributions on suitable integration, translation, and communication methods, standards, protocols, and programming interfaces. The workshop welcomes developers of automated and interactive theorem proving tools, developers of combined systems, developers and users of translation tools and interfaces, and producers of standards and protocols. We are interested both in success stories and descriptions of current bottlenecks and proposals for improvement.

The biennial DEON conferences are designed to promote interdisciplinary cooperation amongst scholars interested in linking the formal-logical study of normative concepts, normative language and normative systems with computer science, artificial intelligence, linguistics, philosophy, organization theory and law. In addition to these general themes, DEON 2020/21 will encourage a special focus on the topic 'Norms in Social Perspective'.

Keynote speakers: Marcia Baron (Indiana University, Bloomington), Emiliano Lorini (IRIT-CNRS, Toulouse University, France), Shyam Nair (Arizona State University, Tempe), and Sonja Smets (ILLC, University of Amsterdam).

We hope the global and local situation will allow us to hold the conference in person. If that will not be the case, we are prepared to hold the conference online, partially or totally. Contributors will be informed in advance.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

The CIAA conferences concern research on all aspects of implementation and application of automata and related structures, including theoretical aspects. Automata theory is the foundation of computer science. Its applications have spread to almost all areas of computer science and many other disciplines. The purpose of these conferences is to bring together members of the academic, research and industrial community who have an interest in implementation and application of automata to demonstrate and analyze their work and to explain the problems they have been solving.

Note: Remote attendance will be possible, regardless of whether or not there will be a physical meeting.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

The biennial DEON conferences are designed to promote interdisciplinary cooperation amongst scholars interested in linking the formal-logical study of normative concepts, normative language and normative systems with computer science, artificial intelligence, linguistics, philosophy, organization theory and law. In addition to these general themes, DEON 2020/21 will encourage a special focus on the topic 'Norms in Social Perspective'.

Keynote speakers: Marcia Baron (Indiana University, Bloomington), Emiliano Lorini (IRIT-CNRS, Toulouse University, France), Shyam Nair (Arizona State University, Tempe), and Sonja Smets (ILLC, University of Amsterdam).

We hope the global and local situation will allow us to hold the conference in person. If that will not be the case, we are prepared to hold the conference online, partially or totally. Contributors will be informed in advance.

We are organising a virtual symposium on different aspects of "Intelligent Systems" at the new campus of Lancaster University in Leipzig on July 22nd 2021. The main topics covered are, among others, Machine Learning, Logic, Cognitive Systems, and Formal Methods.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

 The Munich Center for Mathematical Philosophy is organising the seventh edition of the Summer School on Mathematical Philosophy for Female Students, and invites applications until 29th March 2020. The summer school is open to women with a keen interest in mathematical philosophy. Applicants should be students of philosophy (or philosophically minded logicians or scientists) at an advanced undergraduate level, in a master program, or at an early PhD level.

This year, the Summer School will have the following lecture streams:
- "Suspension of Belief. Its Nature, Rationality and Logic.”, led by Alexandra Zinke (University of Tübingen)
- "Emergence and Reduction in Science", led by Patricia Palacios (University of Salzburg/MCMP)

Because of the current situation the summer school for 2020 is cancelled, but postponed into 2021!

The CIAA conferences concern research on all aspects of implementation and application of automata and related structures, including theoretical aspects. Automata theory is the foundation of computer science. Its applications have spread to almost all areas of computer science and many other disciplines. The purpose of these conferences is to bring together members of the academic, research and industrial community who have an interest in implementation and application of automata to demonstrate and analyze their work and to explain the problems they have been solving.

Note: Remote attendance will be possible, regardless of whether or not there will be a physical meeting.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

The biennial DEON conferences are designed to promote interdisciplinary cooperation amongst scholars interested in linking the formal-logical study of normative concepts, normative language and normative systems with computer science, artificial intelligence, linguistics, philosophy, organization theory and law. In addition to these general themes, DEON 2020/21 will encourage a special focus on the topic 'Norms in Social Perspective'.

Keynote speakers: Marcia Baron (Indiana University, Bloomington), Emiliano Lorini (IRIT-CNRS, Toulouse University, France), Shyam Nair (Arizona State University, Tempe), and Sonja Smets (ILLC, University of Amsterdam).

We hope the global and local situation will allow us to hold the conference in person. If that will not be the case, we are prepared to hold the conference online, partially or totally. Contributors will be informed in advance.

FSCD is a series of annual conferences started in 2016 in Porto, merging and replacing the RTA (Rewriting Techniques and Applications) andTLCA (Typed Lambda Calculi and Applications) conferences. Building on the RTA and TLCA communities, FSCD updates and modernizes the RTA and TLCA core topics and broadens their scope to closely related areas in logics, models of computation (e.g. quantum computing, probabilistic computing, homotopy type theory), semantics and verification in new challenging areas (e.g. blockchain protocols or deep learning algorithms).

FSCD 2021 will be the sixth edition of the International Conference on Formal Structures for Computation and Deduction. Due to the Covid 19 pandemic situation, the 2021 edition of FSCD and its satellite workshops will be held online.

Logic is not merely the study of different forms of reasoning, but also a powerful tool for representing and analyzing diverse phenomena. This course, at the summer school of the Vrije Universiteit Amsterdam, provides an introduction to logic and its application to a variety of fields, from computer science to linguistics and the social sciences. Throughout the course, we will encourage students to think about how they can apply logic to other disciplines they are interested in and discuss their ideas with lecturers and peers based on the information in the tutorials.

The Logic Colloquium is the European Summer Meeting of the Association for Symbolic Logic, an international organization supporting research and critical studies in logic. Its primary function is to provide an effective forum for the presentation, publication, and critical discussion of scholarly work in this area of inquiry.

The program will feature special sessions on Set Theory, Model Theory, Modal and Epistemic Logic, Proofs and Programs, Computability, and Logic in Cognitive Science and Linguistics.

Due to public health concerns regarding COVID-19, the ASL Executive Committee, in consultation with the local organizers and the ASL European Committee, has made the decision to postpone the 2020 Logic Colloquium. It will take place on July 19-24, 2021, approximately a year later than originally scheduled, as an on-line event.

The biennial DEON conferences are designed to promote interdisciplinary cooperation amongst scholars interested in linking the formal-logical study of normative concepts, normative language and normative systems with computer science, artificial intelligence, linguistics, philosophy, organization theory and law. In addition to these general themes, DEON 2020/21 will encourage a special focus on the topic 'Norms in Social Perspective'.

Keynote speakers: Marcia Baron (Indiana University, Bloomington), Emiliano Lorini (IRIT-CNRS, Toulouse University, France), Shyam Nair (Arizona State University, Tempe), and Sonja Smets (ILLC, University of Amsterdam).

We hope the global and local situation will allow us to hold the conference in person. If that will not be the case, we are prepared to hold the conference online, partially or totally. Contributors will be informed in advance.

The goal of this workshop is to bring together people interested in structured representations of semantic information, especially from a computational perspective. In recent years, there has been a growing body of research which aims to integrate structured entities into formal semantic accounts. Important developments in this direction are the introduction of rich type systems and the use of frame-based representations, among others. The workshop is open to both foundational issues of structured semantic representations and applications to specific linguistic phenomena.

A first edition of the workshop took place in Gothenburg as part of IWCS 2019.

The conference is concerned with the theory of computability and complexity over real-valued data. The topics of interest include foundational work on various models and approaches for describing computability and complexity over the real numbers. They also include complexity-theoretic investigations, both foundational and with respect to concrete problems, and new implementations of exact real arithmetic, as well as further developments of already existing software packages. We hope to gain new insights into computability-theoretic aspects of various computational questions from physics and from other fields involving computations over the real numbers.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.

The goal of this workshop is to bring together people interested in structured representations of semantic information, especially from a computational perspective. In recent years, there has been a growing body of research which aims to integrate structured entities into formal semantic accounts. Important developments in this direction are the introduction of rich type systems and the use of frame-based representations, among others. The workshop is open to both foundational issues of structured semantic representations and applications to specific linguistic phenomena.

A first edition of the workshop took place in Gothenburg as part of IWCS 2019.

The conference is concerned with the theory of computability and complexity over real-valued data. The topics of interest include foundational work on various models and approaches for describing computability and complexity over the real numbers. They also include complexity-theoretic investigations, both foundational and with respect to concrete problems, and new implementations of exact real arithmetic, as well as further developments of already existing software packages. We hope to gain new insights into computability-theoretic aspects of various computational questions from physics and from other fields involving computations over the real numbers.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.

The Conference on Uncertainty in Artificial Intelligence (UAI) is one of the premier international conferences on research related to learning and reasoning in the presence of uncertainty. UAI 2021 will be held fully online from 27 to 30 July 2021.

The conference is concerned with the theory of computability and complexity over real-valued data. The topics of interest include foundational work on various models and approaches for describing computability and complexity over the real numbers. They also include complexity-theoretic investigations, both foundational and with respect to concrete problems, and new implementations of exact real arithmetic, as well as further developments of already existing software packages. We hope to gain new insights into computability-theoretic aspects of various computational questions from physics and from other fields involving computations over the real numbers.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.

The Conference on Uncertainty in Artificial Intelligence (UAI) is one of the premier international conferences on research related to learning and reasoning in the presence of uncertainty. UAI 2021 will be held fully online from 27 to 30 July 2021.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.

The Conference on Uncertainty in Artificial Intelligence (UAI) is one of the premier international conferences on research related to learning and reasoning in the presence of uncertainty. UAI 2021 will be held fully online from 27 to 30 July 2021.

The workshop aims to bring together work on using logic, games and automata for automatically generating plans and strategies for AI agents, especially under uncertainty and resource constraints. Topics include, but are not limited to: reactive synthesis, behaviour and service composition, strategy synthesis under resource constraints, epistemic planning.

The workshop will consist of a mixture of invited talks introducing topics in the area of the workshop and contributed talks by PhD students. Workshop participants are required to register for ESSLLI 2021.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.

The Conference on Uncertainty in Artificial Intelligence (UAI) is one of the premier international conferences on research related to learning and reasoning in the presence of uncertainty. UAI 2021 will be held fully online from 27 to 30 July 2021.

The workshop aims to bring together work on using logic, games and automata for automatically generating plans and strategies for AI agents, especially under uncertainty and resource constraints. Topics include, but are not limited to: reactive synthesis, behaviour and service composition, strategy synthesis under resource constraints, epistemic planning.

The workshop will consist of a mixture of invited talks introducing topics in the area of the workshop and contributed talks by PhD students. Workshop participants are required to register for ESSLLI 2021.

We are editing a commemorative issue in memory of Alan Selman, former editor-in-chief of the journal Theory of Computing Systems and community leader in computational complexity, who passed away on 22^nd January 2021.
We solicit contributions in the form of new research investigations, technical surveys, and memoirs. A technical contribution may include a section describing Alan’s influence on the authors, both on their academic careers and personal lives.

In mathematics there has always existed a strong informal sense of "naturality". Natural theories, notions, properties, or proofs are prefered over technical, convoluted, or counterintuitive approaches. If formal mathematics is to become part of mainstream mathematics, its formalizations and user experience have to become more natural. This workshop, following a first edition in 2020, broadly addresses the issue of naturality in formal mathematics.

NatFoM 2021 wil be held as part of the 14th Conference on Intelligent Computer Mathematics (CICM 2021).. Invited speaker: Jeremy Avigad.

Under the auspices of FoLLI the European Summer School in Logic, Language, and Information (ESSLLI) is organized every year in a different European country. It takes place over two weeks in the European Summer, hosts approximately 50 different courses at both the introductory and advanced levels, attracting around 400 participants each year from all the world.

The main focus of the program of the summer schools is the interface between linguistics, logic and computation, with special emphasis in human linguistic and cognitive ability. Courses, both introductory and advanced, cover a wide variety of topics within the combined areas of interest: Logic and Computation, Computation and Language, and Language and Logic. Workshops are also organized, providing opportunities for in-depth discussion of issues at the forefront of research, as well as a series of invited lectures.

The circumstances around the coronavirus (COVID-19) pandemic forced the organizers to postpone the 32nd edition of ESSLLI, planned for 2020 in Utrecht as ESSLLI-2020, to 26 july-13 august 2021, as well as hold it online. In view of the online format, the program is spread over three weeks so as to facilitate attendance.

The Student Session of the 32nd European Summer School in Logic, Language, and Information (ESSLLI) will take place online during ESSLLI 2021 at Utrecht University, the Netherlands, August 2nd to 13th, 2021.