54Axx Generalities

• 54A05 Topological spaces and generalizations (closure spaces, etc.)
• 54A10 Several topologies on one set (change of topology, comparison of topologies, lattices of topologies)
• 54A15 Syntopogeneous structures
• 54A20 Convergence in general topology (sequences, filters, limits, convergence spaces, etc.)
• 54A25 Cardinality properties (cardinal functions and inequalities, discrete subsets), See also {03Exx, 04A30}, {For ultrafilters, See 54D80}
• 54A35 Consistency and independence results, See also {03E35}
• 54A40 Fuzzy topology, See also {04A72}
• 54A99 None of the above but in this section