54-00 General reference works (handbooks, dictionaries, bibliographies, etc.) pertaining to general topology 26
54A10 Several topologies on one set (change of topology, comparison of topologies, lattices of topologies) 1757
54A20 Convergence in general topology (sequences, filters, limits, convergence spaces, nets, etc.) 2656
54A25 Cardinality properties (cardinal functions and inequalities, discrete subsets) [See also 03Exx] {For ultrafilters, see 54D80} 2793
54C55 Absolute neighborhood extensor, absolute extensor, absolute neighborhood retract (ANR), absolute retract spaces (general properties) [See also 55M15] 1224
54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.) 2052
54F05 Linearly ordered topological spaces, generalized ordered spaces, and partially ordered spaces [See also 06B30, 06F30] 2544
54H05 Descriptive set theory (topological aspects of Borel, analytic, projective, etc. sets) [See also 03E15, 26A21, 28A05] 1662
54H13 Topological fields, rings, etc. (topological aspects) [See also 12Jxx] {For algebraic aspects, see 13Jxx, 16W80} 348
54H30 Applications of general topology to computer science (e.g., digital topology, image processing) [See also 68U03] 36