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Glossary of category theory : ウィキペディア英語版 | Glossary of category theory This is a glossary of properties and concepts in category theory in mathematics.〔Notes on foundations: In many expositions (e.g., Vistoli), the set-theoretic issues are ignored; this means, for instance, that one does not distinguish between small and large categories and that one can arbitrarily form a localization of a category. If one believes in the existence of strongly inaccessible cardinals, then there can be a rigorous theory where statements and constructions have references to Grothendieck universes; this approach is taken, for example, in Lurie's ''Higher Topos Theory''.〕 The notations used throughout the article are: *() = , which is viewed as a category (by writing .) *Cat, the category of (small) categories, where the objects are categories (which are small with respect to some universe) and the morphisms natural transformations. *Fct(''C'', ''D''), the functor category: the category of functors from a category ''C'' to a category ''D''. *Set, the category of (small) sets. *''s''Set, the category of simplicial sets. ==A==
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