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18A32 - Category theory; homological algebra :: General theory of categories and functors :: Factorization of morphisms, substructures, quotient structures, congruences, amalgams

  1. category of fractions owned by CWoo
  2. factorization system owned by CWoo
  3. orthogonal morphisms owned by CWoo
  4. properties of orthogonality on morphisms owned by CWoo
  5. quotient category owned by CWoo

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