Rings and modules 2: Group rings
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Mathematics
Rings and modules 1 Introduction
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Categories 5 Limits and colimits
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Categories 4 Adjoint functors
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Categories 3 Natural transformations
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Categories 2: Functors
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Categories 1 Introduction
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Ali Enayat: Tight Theories
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4/5
Ralf Schindler: How many real numbers are there?
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Fedor Pakhomov: Kripke-Platek set theory
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4/5
Wilfried Sieg: Gödel in AProS
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Sam Sanders: On two topics dear to Kurt Gödel
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4/5
Minimal Logics for Incompleteness
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4/5
James Walsh: On the hierarchy of natural theories
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4/5
Harvey Friedman: Aspects of Gödel incompleteness
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4/5
Emil Jerábek: Hereditarily bounded sets
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4/5
Completions of PA and ω-models of KP
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4/5
Self-reference, truth, and provability
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4/5