factor through

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English

Verb

factor through (third-person singular simple present factors through, present participle factoring through, simple past and past participle factored through)

(category theory) Said of a morphism: to be equal to a composition of two morphisms, one of which is the given morphism (that is being said to be "factored through").
- 1995, Colin McLarty, Elementary Categories, Elementary Toposes, page 142:
  LEMMA 16.3 An arrow $f:A\rightarrow B$ is epic iff $1_{B}$ is the smallest sub-object of $B$ that $f$ factors through.

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