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Results tagged with ringed-spaces
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user 6545
3
votes
Accepted
Coherence for pull-backs and push-forwards
I would like to revive this old question by answering it with a pointer to my recent preprint Obvious natural morphisms of sheaves are unique, which addresses precisely this problem. In particular, I …
- 7,273
12
votes
Accepted
Sheaves of $\mathbb Z$-modules = sheaves of abelian groups
$\def\sh#1{\mathcal{#1}}\def\csheaf#1{\underline{#1}}\def\on#1{\operatorname{#1}}$First of all, if $X$ is an irreducible scheme (or any such topological space), then all of its open subsets are connec …
- 7,273