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18Bxx Special categories {Info & Stats}

  • 18B05 Category of sets, characterizations [See also 03-XX]
  • 18B10 Category of relations, additive relations
  • 18B15 Embedding theorems, universal categories [See also 18E20]
  • 18B20 Categories of machines, automata, operative categories [See also 03D05, 68Qxx]
  • 18B25 Topoi [See also 03G30]
  • 18B30 Categories of topological spaces and continuous mappings [See also 54-XX]
  • 18B35 Preorders, orders and lattices (viewed as categories) [See also 06-XX]
  • 18B40 Groupoids, semigroupoids, semigroups, groups (viewed as categories) [See also 20Axx, 20L05, 20Mxx]
  • 18B99 None of the above, but in this section