Question

The global section functor of abelian sheaf over a topological space of dimension zero

score 37 · Answer 1 · 2019-11-25 17:42:46

37

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The global section functor of abelian sheaf over a topological space of dimension zero

Published on 25 Nov 2019 - 17:42

score 184 · Answer 2 · 2019-11-26 03:12:17

184

Views

Devissage lemma part 2 (by Mumford's & Oda's AG II)

Published on 26 Nov 2019 - 3:12

score 70 · Answer 3 · 2026-03-28 08:28:07

70

Views

Closure condition for a subpresheaf being closed.

Published on 28 Mar 2026 - 8:28

score 83 · Answer 4 · 2019-11-27 20:45:04

83

Views

Exercise on sheaves

Published on 27 Nov 2019 - 20:45

score 22 · Answer 5 · 2019-11-29 09:58:47

22

Views

what does $s,t \in F(U)$ represent here?, Sheaf theory

Published on 29 Nov 2019 - 9:58

score 107 · Answer 6 · 2026-03-28 08:36:24

107

Views

If $G$ is a subpresheaf of $F$ and $G$ is a sheaf, then $G$ is closed in $Sub(F)$.

Published on 28 Mar 2026 - 8:36

score 112 · Answer 7 · 2019-12-01 14:03:50

112

Views

An exact triangle of (derived) sheaves.

Published on 01 Dec 2019 - 14:03

score 273 · Answer 8 · 2026-03-25 19:01:00

273

Views

limit functor isomorphic to global sections functor?

Published on 25 Mar 2026 - 19:01

score 155 · Answer 9 · 2019-12-04 21:19:51

155

Views

Pullback of ideal sheaf under base change to completion

Published on 04 Dec 2019 - 21:19

score 141 · Answer 10 · 2026-03-25 12:33:15

141

Views

Tensoring locally free sheaves preserves acyclicity

Published on 25 Mar 2026 - 12:33

score 395 · Answer 11 · 2019-12-06 11:42:07

395

Views

If $\textbf{C}$ is an abelian category,thenthe category of presheaves of abelian groups on $\textbf{C}$ is abelian.Is $\textbf{C}$ abelian necessary?

Published on 06 Dec 2019 - 11:42

score 139 · Answer 12 · 2026-03-28 08:28:02

139

Views

What does a Real Number Object look like as a sheaf?

Published on 28 Mar 2026 - 8:28

score 91 · Answer 13 · 2019-12-13 05:31:28

91

Views

Normal sheaf of the diagonal of $\mathbb{P}^1 \times \mathbb{P}^1$

Published on 13 Dec 2019 - 5:31

score 747 · Answer 14 · 2019-12-15 19:16:12

747

Views

When is it true that if a section vanishes on a dense open set then it is the zero global section?

Published on 15 Dec 2019 - 19:16

score 1.4k · Answer 15 · 2026-03-26 06:34:51

1.4k

Views

Ext groups of sheaves and sheaf cohomology in the context of duality theorems

Published on 26 Mar 2026 - 6:34

List Question

The global section functor of abelian sheaf over a topological space of dimension zero

Devissage lemma part 2 (by Mumford's & Oda's AG II)

Closure condition for a subpresheaf being closed.

Exercise on sheaves

what does $s,t \in F(U)$ represent here?, Sheaf theory

If $G$ is a subpresheaf of $F$ and $G$ is a sheaf, then $G$ is closed in $Sub(F)$.

An exact triangle of (derived) sheaves.

limit functor isomorphic to global sections functor?

Pullback of ideal sheaf under base change to completion

Tensoring locally free sheaves preserves acyclicity

If $\textbf{C}$ is an abelian category,thenthe category of presheaves of abelian groups on $\textbf{C}$ is abelian.Is $\textbf{C}$ abelian necessary?

What does a Real Number Object look like as a sheaf?

Normal sheaf of the diagonal of $\mathbb{P}^1 \times \mathbb{P}^1$

When is it true that if a section vanishes on a dense open set then it is the zero global section?

Ext groups of sheaves and sheaf cohomology in the context of duality theorems

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