Seminar by S. L. Kuznetsov and S. O. Speranski "Non-classical Logics" September 14–December 21, 2022, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
Traditionally, each logic, except classical, is called "non-classical". There are many non-classical logics. They are used in the foundations of mathematics, computer science, formal philosophy and epistemology, linguistics, etc. There could be various reasons for a logical system to be regarded as non-classical. In particular, a system will be non-classical if it satisfies at least one of the following conditions:
- the behaviour of one of the standard connectives (implication, disjunction, negation, conjunction) in this system differs from the classical one, e.g., implication could be more "relevant", avoiding the "paradoxes of material implication";
- the language of this system includes extra connectives, such as modalities "it is possible that..." or "it is necessary that ...", the concrete interpretation of which depends on the area of applications;
- the language includes quantifiers which cannot be expressed in classical first-order logic, like "there exist infinitely many $x$ such that..."
Non-classical logics could be strongly complete w.r.t. appropriate semantics, which is significantly different from the classical one (these include possible world semantics, topological semantics, algebraic semantic, game-theoretic semantics, etc). At the same time, some non-classical logics do not enjoy complete deductive systems, due to their high algorithmic complexity; such logics can still be studied from the model-theoretic point of view.
Financial support. The seminar is supported by the Ministry of Science and Higher Education of the Russian Federation (the grant to the Steklov International Mathematical Center, Agreement no. 075-15-2022-265).
Program
Seminar organizers
Kuznetsov Stepan Lvovich
Speranski Stanislav Olegovich
Institutions
Steklov Mathematical Institute of Russian Academy of Sciences, Moscow Steklov International Mathematical Center |
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Seminar by S. L. Kuznetsov and S. O. Speranski "Non-classical Logics", September 14–December 21, 2022 |
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December 21, 2022 (Wed) |
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Seminar 14. Lambek calculus and relational semantics: some completeness results Konstantin Shishov December 21, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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December 14, 2022 (Wed) |
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Seminar 13. Polynomial probabilistic logic for reasoning about probabilities Vladimir Karpov December 14, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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December 7, 2022 (Wed) |
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Seminar 12. Monadic Second-Order Logic Pavel Sokolov December 7, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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November 30, 2022 (Wed) |
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Seminar 11. Gödel–Löb Logic. Guarded Recursion Diana Kalinichenko November 30, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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November 23, 2022 (Wed) |
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Seminar 10. Embedding of Int into S4 Grigory Velmakin November 23, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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November 16, 2022 (Wed) |
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Seminar 9. Algebraic Glimpse on Non-classical Logics T. G. Pshenitsyn November 16, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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November 2, 2022 (Wed) |
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Seminar 8. Soft linear logic Danila Demin November 2, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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October 26, 2022 (Wed) |
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Seminar 7. Game-Theoretic Semantics George Potapov October 26, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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October 19, 2022 (Wed) |
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Seminar 6. Dynamic Logic Gleb Krasilich October 19, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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October 12, 2022 (Wed) |
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Seminar 5. Constructive Mathematics Ivan Slusarev October 12, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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October 5, 2022 (Wed) |
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Seminar 4. Justification Logic E. L. Popova October 5, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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September 28, 2022 (Wed) |
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Seminar 3. Intuitionistic Logic and Non-Classical Logics on Its Base A. V. Grefenshtein September 28, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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September 21, 2022 (Wed) |
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Seminar 2. Substructural Logics and Their Applications in Linguistics S. L. Kuznetsov September 21, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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September 14, 2022 (Wed) |
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Seminar 1. Non-classical Logics S. O. Speranski September 14, 2022 18:00, Steklov Mathematical Institute, Room 313 (8 Gubkina) + online
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