## Mathematical Subject Classification – MSC2010

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

Instructional exposition (textbooks, tutorial papers, etc.) 200

Research exposition (monographs, survey articles) 315

Explicit machine computation and programs (not the theory of computation or programming) 31

Special properties of functors (faithful, full, etc.) 283

Limits and colimits (products, sums, directed limits, pushouts, fiber products, equalizers, kernels, ends and coends, etc.) 916

Categories admitting limits (complete categories), functors preserving limits, completions 497

Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) 1571

Groupoids, semigroupoids, semigroups, groups (viewed as categories) [See also 20Axx, 20L05, 20Mxx] 467

Monoidal categories (= multiplicative categories), symmetric monoidal categories, braided categories [See also 19D23] 1868

Closed categories (closed monoidal and Cartesian closed categories, etc.) 942

Enriched categories (over closed or monoidal categories) 558

Structured objects in a category (group objects, etc.) 478