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Mathematical Sciences Classification System

54Axx - Generalities

• 1
  54A05
  Topological spaces and generalizations (closure spaces, etc.)
• 2
  54A10
  Several topologies on one set (change of topology, comparison of topologies, lattices of topologies)
• 54A15
  Syntopogeneous structures
• 1
  54A20
  Convergence in general topology (sequences, filters, limits, convergence spaces, etc.)
• 54A25
  Cardinality properties (cardinal functions and inequalities, discrete subsets) [See also 03Exx] {For ultrafilters, see 54D80}
• 54A35
  Consistency and independence results [See also 03E35]
• 2
  54A40
  Fuzzy topology [See also 03E72]
• 54A99
  None of the above, but in this section