18Axx General theory of categories and functors ( 0 Dok. )

• 18A05 Definitions, generalizations ( 0 Dok. )
• 18A10 Graphs, diagram schemes, precategories, neocategories, See also {20Lxx} ( 0 Dok. )
• 18A15 Foundations, relations to logic and deductive systems, See also {03-XX} ( 0 Dok. )
• 18A20 Epimorphisms, monomorphisms, special classes of morphisms, null morphisms, factorization (bicategories) ( 0 Dok. )
• 18A22 Special properties of functors (faithful, full, etc.) ( 0 Dok. )
• 18A23 Natural morphisms, dinatural morphisms ( 0 Dok. )
• 18A25 Functor categories, comma categories ( 0 Dok. )
• 18A30 Limits and colimits (products, sums, directed limits, pushouts, fiber products, equalizers, kernels, ends and coends, etc.) ( 0 Dok. )
• 18A32 Factorization of morphisms (via images, coimages, dominions, codominions), substructures, quotient structures, congruences, amalgams ( 0 Dok. )
• 18A35 Categories admitting limits (complete categories), functors commuting with limits, continuous functors, completions ( 0 Dok. )
• 18A40 Adjoint functors (representable functors, universal constructions, reflective subcategories, reflections, etc.), constructions of adjoints (Kan extensions, etc.) ( 0 Dok. )
• 18A99 None of the above but in this section ( 0 Dok. )