Meanings
nounforgetful functor (plural forgetful functors)
plural forgetful functors
- category theoryA functor that forgets or drops some or all of its input's structure or properties before mapping to the output.
Synonyms: stripping functor, underlying functor
Synonyms & antonyms
nounA functor that forgets or drops some or all of its input's structure or properties before mapping to the output.
Similar
stripping functorunderlying functor
Translations
Icelandic gleymskuvarpi
- gleymskuvarpicategory theory: a functor that forgets its inputs's structure
Spanish funtor de olvido
- funtor de olvidocategory theory: a functor that forgets its inputs's structure
Cite this entry
APA
forgetful functor. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/forgetful%20functor
MLA
“forgetful functor.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/forgetful%20functor. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “forgetful functor,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/forgetful%20functor.
Source: forgetful functor on Wiktionary, CC BY-SA 4.0.