Constructible sheaf

id: constructible-sheaf-203-2613752
title: Constructible sheaf
text: In mathematics, a constructible sheaf is a sheaf of abelian groups over some topological space X, such that X is the union of a finite number of locally closed subsets on each of which the sheaf is a locally constant sheaf]. It has its origins in algebraic geometry, where in étale cohomology constructible sheaves are defined in a similar way. For the derived category of constructible sheaves, see a section in ℓ-adic sheaf. The finiteness theorem in étale cohomology states that the higher direct
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category slug: encyclopedia
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original url: https://en.wikipedia.org/wiki/Constructible_sheaf
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date modified: 2024-04-27T02:08:34Z
main entity: {"identifier":"Q5164407","url":"https://www.wikidata.org/entity/Q5164407"}
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