## Mathematics Subject Classification – MSC2010

General reference works (handbooks, dictionaries, bibliographies, etc.) 18

Instructional exposition (textbooks, tutorial papers, etc.) 223

Research exposition (monographs, survey articles) 343

Explicit machine computation and programs (not the theory of computation or programming) 35

Special properties of functors (faithful, full, etc.) 322

Limits and colimits (products, sums, directed limits, pushouts, fiber products, equalizers, kernels, ends and coends, etc.) 1019

Categories admitting limits (complete categories), functors preserving limits, completions 536

Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) 1697

Groupoids, semigroupoids, semigroups, groups (viewed as categories) [See also 20Axx, 20L05, 20Mxx] 564

Monoidal categories (= multiplicative categories), symmetric monoidal categories, braided categories [See also 19D23] 2338

Closed categories (closed monoidal and Cartesian closed categories, etc.) 1027

Enriched categories (over closed or monoidal categories) 683

Structured objects in a category (group objects, etc.) 546