pseudofunctor

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noun

A mapping between categories that is just like a functor except that f(x∘y)=f(x)∘f(y) and f(1)=1 do not hold as exact equalities but only up to coherent isomorphisms.

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Meanings

nounpseudofunctor (plural pseudofunctors)

plural pseudofunctors

  1. mathematicsA mapping between categories that is just like a functor except that f(x∘y)=f(x)∘f(y) and f(1)=1 do not hold as exact equalities but only up to coherent isomorphisms.

Origin

From pseudo- + functor.

Full word history & related roots →
Cite this entry
APA

pseudofunctor. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/pseudofunctor

MLA

“pseudofunctor.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pseudofunctor. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “pseudofunctor,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/pseudofunctor.

Source: pseudofunctor on Wiktionary, CC BY-SA 4.0.