Products of Topological Modal Logics Darko Sarenac Abstract: This thesis is about logic of space. In it we use various techniques of modal logic and topology to devise a class of increasingly stronger logics of space. The underlying intuition is that for lots of applications spatial intuition and spatial reasoning seem basic. And this not only in applications such as guiding robots or automated vehicles through real three-dimensional space, but also for such diverse applications as reasoning about knowledge, processing and updating of information. The thesis makes some initial steps in understanding the structure of space with efficient languages of modal logic, with an ultimate aim of applying them to cognitive settings.