Effaceable functor
id:
effaceable-functor-260-1299455
title:
Effaceable functor
text:
In mathematics, an effaceable functor is an additive functor F between abelian categories C and D for which, for each object A in C, there exists a monomorphism u : A → M , for some M, such that F = 0 . Similarly, a coeffaceable functor is one for which, for each A, there is an epimorphism into A that is killed by F. The notions were introduced in Grothendieck's Tohoku paper. A theorem of Grothendieck says that every effaceable δ-functor is universal.
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wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Effaceable_functor
date created:
date modified:
2024-03-04T06:57:10Z
main entity:
{"identifier":"Q16930747","url":"https://www.wikidata.org/entity/Q16930747"}
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fields total:
13
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