The RAMiCS conference series has been the main venue for research on relation algebras, Kleene algebras and similar algebraic formalisms, and their applications as conceptual and methodologica tools in computer science and beyond.

The RAMiCS conference series has been the main venue for research on relation algebras, Kleene algebras and similar algebraic formalisms, and their applications as conceptual and methodologica tools in computer science and beyond.

The RAMiCS conference series has been the main venue for research on relation algebras, Kleene algebras and similar algebraic formalisms, and their applications as conceptual and methodologica tools in computer science and beyond.

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.

Research, work in progress, position and student papers were welcome. List of topics of interest includes (but is not limited to): formalisms for program semantics, formal models and semantics of programs and systems, semantics of programming and specification languages, formal description techniques, logics for formal specification and verification, deductive program verification, automatic theorem proving, model checking of programs and systems, static analysis of programs, formal approach to testing and validation, and program analysis and verification tools.

PSSV-2021 is planned to be held in hybrid mode online (using Zoom) and offline (at Innopolis University).

Second-order quantifier elimination (SOQE) is the problem of equivalently reducing a formula with quantifiers upon second-order objects such as predicates to a formula in which these quantified second-order objects no longer occur. In slight variations, SOQE is known as forgetting, projection, predicate elimination, and uniform interpolation. It can be combined with various underlying logics, including propositional, model, description and first-order logics. It is attractive as a logic-based approach to various computational tasks.

The workshop aims to bring together researchers working on SOQE and all these related topics to present, discuss and compare issues shared by problems emerging from different special contexts, interesting open research problems (perhaps with partial solutions), new applications and implementation techniques. SOQE will be associated with the 18th International Conference on Principles of Knowledge Representation and Reasoning (KR 2021).

The RAMiCS conference series has been the main venue for research on relation algebras, Kleene algebras and similar algebraic formalisms, and their applications as conceptual and methodologica tools in computer science and beyond.

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.

Research, work in progress, position and student papers were welcome. List of topics of interest includes (but is not limited to): formalisms for program semantics, formal models and semantics of programs and systems, semantics of programming and specification languages, formal description techniques, logics for formal specification and verification, deductive program verification, automatic theorem proving, model checking of programs and systems, static analysis of programs, formal approach to testing and validation, and program analysis and verification tools.

PSSV-2021 is planned to be held in hybrid mode online (using Zoom) and offline (at Innopolis University).

NMR is the premier forum for results in the area of Non-Monotonic Reasoning. Its aim is to bring together active researchers in this broad field within knowledge representation and reasoning (KR), including belief revision, uncertain reasoning, reasoning about actions, planning, logic programming, preferences, argumentation, causality, and many other related topics including systems and applications.

NMR-21 will be co-located with the International Conference on Principles of Knowledge Representation and Reasoning (KR 2021).

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

The Conference - devoted to non-classical logics - was initially held in Łódź in September 2008 and 2009. The conference serves as a forum to effectively exchange novel results and to survey works in widely understood non-classical logics and their applications.This year's tenth edition of the Conference will be an occasion to celebrate the 50th anniversary of the logic journal Bulletin of the Section of Logic, established in 1971.

During this year's edition of the conference there will be two special sessions: a session devoted to formal ontology, broadly conceived, and a special session in memoriam J. Michael Dunn who passed away on April, 5, 2021.

Due to the current situation concerning COVID-19 and very uncertain predictions about what will happen in the autumn, after several consultations the organizers of the conference decided to postpone it until the year 2022. We want the event to keep its on-site character, which, however, requires that the pandemic is overcome. The conference date has been changed to 14-18.03.2022 and hopefully it will not have to be subject to further revision.

NMR is the premier forum for results in the area of Non-Monotonic Reasoning. Its aim is to bring together active researchers in this broad field within knowledge representation and reasoning (KR), including belief revision, uncertain reasoning, reasoning about actions, planning, logic programming, preferences, argumentation, causality, and many other related topics including systems and applications.

NMR-21 will be co-located with the International Conference on Principles of Knowledge Representation and Reasoning (KR 2021).

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

The workshop will bring together researchers on proof theory and its applications through a series of invited and contributed talks as well as panel discussion.

Confirmed speakers include Eduardo Fermé, David Fernández Duque, Stepan Kuznetsov, Fedor Pakhomov, Michael Rathjen, and Andrei Voronkov. The event will be attending-only and shall not be streamed online.

NMR is the premier forum for results in the area of Non-Monotonic Reasoning. Its aim is to bring together active researchers in this broad field within knowledge representation and reasoning (KR), including belief revision, uncertain reasoning, reasoning about actions, planning, logic programming, preferences, argumentation, causality, and many other related topics including systems and applications.

NMR-21 will be co-located with the International Conference on Principles of Knowledge Representation and Reasoning (KR 2021).

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Knowledge Representation and Reasoning (KR) is a well-established and lively field of research. In KR a fundamental assumption is that an agent's knowledge is explicitly represented in a declarative form, suitable for processing by dedicated reasoning engines. This assumption, that much of what an agent deals with is knowledge-based, is common in many modern intelligent systems. Consequently, KR has contributed to the theory and practice of various areas in AI, including automated planning and natural language understanding, and to fields beyond AI, including databases, verification, software engineering, and robotics. In recent years, KR has contributed also to new and emerging fields, including the semantic web, computational biology, cyber security, and the development of software agents.

The KR conference series is the leading forum for timely in-depth presentation of progress in the theory and principles underlying the representation and computational management of knowledge.

Computational linguistics studies natural language in its various manifestations from a computational point of view, both on the theoretical level (modeling grammar modules dealing with natural language form and meaning, and the relation between these two) and on the practical level (developing applications for language and speech technology). Right from the start in the 1950s, there have been strong links with computer science, logic, and many areas of mathematics - one can think of Chomsky's contributions to the theory of formal languages and automata, or Lambek's logical modeling of natural language syntax. The symposium assesses the place of logic, mathematics, and computer science in present day computational linguistics. It intends to be a forum for presenting new results as well as work in progress.

The symposium focuses mainly on logical approaches to computational processing of natural language, and on the applicability of methods and techniques from the study of artificial languages (programming/logic) in computational linguistics. We invite participation and submissions from other relevant approaches too, especially if they can inspire new work and approaches.

LACompLing2021 is part of the week "Mathematical Linguistics (MALIN) 2021"

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.

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.

The Third Tsinghua Interdisciplinary Workshop in Logic, Language and Meaning) will be held on April 1–3, 2022. This workshop aims to bring together Chinese and international scholars from various disciplines, in particular logic, linguistics, and philosophy, who are working in areas related to natural language semantics.

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.

Modalities and predicates have since ancient time been central notions of logic. In the 20th century, various systems of non-classical logics have emerged, with applications in many disciplines like Computer Science, Linguistics, Mathematics, and Philosophy. This gave rise to the questions of a non-classical treatment of quantifiers and modalities and the accommodation of quantifiers and modalities in non-classical logics. In response, various modal and predicate variants of non-classical logics have been introduced and studied in the past decades.

NCMPL is a conference series solely dedicated to modal and predicate non-classical logics. The aim of the conference is to bring together researchers from various branches of non-classical logics, not only to present recent advances in their particular fields, but also to identify common problems and methods and foster the exchange of ideas between researchers from separate fields.

Modalities and predicates have since ancient time been central notions of logic. In the 20th century, various systems of non-classical logics have emerged, with applications in many disciplines like Computer Science, Linguistics, Mathematics, and Philosophy. This gave rise to the questions of a non-classical treatment of quantifiers and modalities and the accommodation of quantifiers and modalities in non-classical logics. In response, various modal and predicate variants of non-classical logics have been introduced and studied in the past decades.

NCMPL is a conference series solely dedicated to modal and predicate non-classical logics. The aim of the conference is to bring together researchers from various branches of non-classical logics, not only to present recent advances in their particular fields, but also to identify common problems and methods and foster the exchange of ideas between researchers from separate fields.

Modalities and predicates have since ancient time been central notions of logic. In the 20th century, various systems of non-classical logics have emerged, with applications in many disciplines like Computer Science, Linguistics, Mathematics, and Philosophy. This gave rise to the questions of a non-classical treatment of quantifiers and modalities and the accommodation of quantifiers and modalities in non-classical logics. In response, various modal and predicate variants of non-classical logics have been introduced and studied in the past decades.

NCMPL is a conference series solely dedicated to modal and predicate non-classical logics. The aim of the conference is to bring together researchers from various branches of non-classical logics, not only to present recent advances in their particular fields, but also to identify common problems and methods and foster the exchange of ideas between researchers from separate fields.

To mark the occasion of Sirin Botan's PhD defense, we are organising a one-day workshop in the centre of Amsterdam.

Computational and technological developments that incorporate natural language are proliferating. Adequate coverage encounters difficult problems related to partiality, underspecification, and context-dependency, which are signature features of information in nature and natural languages. Furthermore, agents (humans or computational systems) are information conveyors, interpreters, or participate as components of informational content. Generally, language processing depends on agents' knowledge, reasoning, perspectives, and interactions.

The session covers theoretical work, applications, approaches, and techniques for computational models of information and its presentation by language (artificial, human, or natural in other ways). The goal is to promote computational systems of intelligent natural language processing and related models of thought, mental states, reasoning, and other cognitive processes.

Modalities and predicates have since ancient time been central notions of logic. In the 20th century, various systems of non-classical logics have emerged, with applications in many disciplines like Computer Science, Linguistics, Mathematics, and Philosophy. This gave rise to the questions of a non-classical treatment of quantifiers and modalities and the accommodation of quantifiers and modalities in non-classical logics. In response, various modal and predicate variants of non-classical logics have been introduced and studied in the past decades.

NCMPL is a conference series solely dedicated to modal and predicate non-classical logics. The aim of the conference is to bring together researchers from various branches of non-classical logics, not only to present recent advances in their particular fields, but also to identify common problems and methods and foster the exchange of ideas between researchers from separate fields.

The topic of bilateralism - situated in the area of proof-theoretic semantics - has received considerable attention in the area of philosophical logic within the past years. According to proof-theoretic semantics the meaning of the logical connectives is determined by the rules of inference governing their use in proofs. In this context bilateralism demands an equal consideration of dual concepts like truth and falsity, assertion and denial, or proof and refutation in that they should both be taken as primitive concepts, i.e. not reducible to each other. This conference aims at sharing and discussing the latest research in this area by bringing together both highly distinguished as well as early career researchers.

Invited Speakers: Nils Kürbis (University of Łódź & Ruhr University Bochum), Greg Restall (University of St. Andrews), David Ripley (Monash University), Luca Tranchini (University of Tübingen), Peter Verdée (UCLouvain) and Heinrich Wansing (Ruhr University Bochum).

The intended audience for the Winter School is advanced master students, PhD students, postdocs and experienced researchers new to the field in mathematics, computer science and philosophy. The winter school offers courses of various levels by the following experts in the field: Bahareh Afshari, Juan Aguilera , Anupam Das, Graham Leigh, Alexander Leitsch and Norbert Preining. The event will be attending-only and shall not be streamed online.The conference fee includes registation to the affiliated The Proof Society Workshop on Proof Theory and its Applications

The intended audience for the Winter School is advanced master students, PhD students, postdocs and experienced researchers new to the field in mathematics, computer science and philosophy. The winter school offers courses of various levels by the following experts in the field: Bahareh Afshari, Juan Aguilera , Anupam Das, Graham Leigh, Alexander Leitsch and Norbert Preining. The event will be attending-only and shall not be streamed online.The conference fee includes registation to the affiliated The Proof Society Workshop on Proof Theory and its Applications