## Mathematics Subject Classification – MSC2010

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

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

Research exposition (monographs, survey articles) 346

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

Special properties of functors (faithful, full, etc.) 325

Limits and colimits (products, sums, directed limits, pushouts, fiber products, equalizers, kernels, ends and coends, etc.) 1024

Categories admitting limits (complete categories), functors preserving limits, completions 535

Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) 1709

Groupoids, semigroupoids, semigroups, groups (viewed as categories) [See also 20Axx, 20L05, 20Mxx] 577

Monoidal categories (= multiplicative categories), symmetric monoidal categories, braided categories [See also 19D23] 2374

Closed categories (closed monoidal and Cartesian closed categories, etc.) 1030

Enriched categories (over closed or monoidal categories) 687

Structured objects in a category (group objects, etc.) 549