| 18-XX |
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Category theory; homological algebra {For commutative rings, see 13Dxx; for associative rings, see 16Exx; for groups, see 20Jxx; for topological groups and related structures, see 57Txx; for algebraic topology, see also 55Nxx, 55Uxx} |
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18Dxx |
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Categorical structures |
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18D15 |
Closed categories (closed monoidal and Cartesian closed categories, etc.) |
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18D20 |
Enriched categories (over closed or monoidal categories) |
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18D25 |
Actions of a monoidal category, tensorial strength {For functional programming, see also 68N18} |
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18D30 |
Fibered categories |
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18D40 |
Internal categories and groupoids {For double categories, see 18N10; for topological groupoids, see 22A22; for Lie groupoids, see 58H05} |
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18D60 |
Profunctors (= correspondences, distributors, modules) |
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18D65 |
Proarrow equipments, Yoneda structures, KZ doctrines (lax idempotent monads) |
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18D70 |
Formal category theory |
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18D99 |
None of the above, but in this section |
