This category is about mathematical logic and foundations of mathematics. (So it roughly corresponds to category 03-XX in the 1991 Mathematical Sciences Classification.) Major related subjects outside mathematics are ... [MORE]
Classical Logic
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Introduction to classical logic, including completeness and Löwenheim-Skolem theorems; by Stewart Shapiro.
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Computability Logic Homepage
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Main online source on computability logic - a recently emerged formal theory of computational tasks and resources. Maintained by G.Japaridze.
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Math Front: LO Logic
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Front end for the logic section of the mathematics e-print arXiv.
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Mathematical Logic and Foundations
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From The Mathematical Atlas, a resource of mathematics maintained by David Rusin. Extensive resources related to logic and set theory.