Question

A surjecive homomorphism of $ \mathbb R $-algebras

score 74 · Answer 1 · 2023-07-17 14:59:54

74

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A surjecive homomorphism of $ \mathbb R $-algebras

Published on 17 Jul 2023 - 14:59

score 71 · Answer 2 · 2023-07-20 18:26:17

71

Views

In what sense the "pullback at $ x $" map if functorial?

Published on 20 Jul 2023 - 18:26

score 23 · Answer 3 · 2026-02-22 21:59:51

23

Views

Finite product of supermanifold.

Published on 22 Feb 2026 - 21:59

score 66 · Answer 4 · 2023-09-30 20:22:51

66

Views

When can $\textbf{SpecMax}(R)$ be a scheme?

Published on 30 Sep 2023 - 20:22

score 43 · Answer 5 · 2023-10-16 08:08:22

43

Views

Closed subspace cut off by the ideal sheaf coming from a locally closed immersion

Published on 16 Oct 2023 - 8:08

score 103 · Answer 6 · 2023-11-13 00:27:57

103

Views

Closed subvariety is a subvariety

Published on 13 Nov 2023 - 0:27

score 51 · Answer 7 · 2023-12-12 07:50:55

51

Views

Pullback of structure sheaf along point inclusion into locally ringed space is residue field?

Published on 12 Dec 2023 - 7:50

score 57 · Answer 8 · 2023-12-13 20:16:17

57

Views

If $\mathfrak{p}_y$ the preimage of $\mathfrak{m}_x$ by $\mathcal{O}_Y(Y)\rightarrow\mathcal{O}_X(X)\rightarrow \mathcal{O}_{X,x}$, show that $f(x)=y$

Published on 13 Dec 2023 - 20:16

score 64 · Answer 9 · 2023-12-19 08:08:21

64

Views

Defining algebraic varieties in general

Published on 19 Dec 2023 - 8:08

score 56 · Answer 10 · 2023-12-28 05:56:13

56

Views

Let $(X,\mathcal{O}_X)$ be a locally ringed space, does there exists a monomorphism $\iota:U\rightarrow X$ for all open $U$?

Published on 28 Dec 2023 - 5:56

score 90 · Answer 11 · 2023-12-28 08:23:07

90

Views

Do morphisms of locally ringed spaces which agree on stalks agree on the whole of the locally ringed space?

Published on 28 Dec 2023 - 8:23

score 58 · Answer 12 · 2024-01-15 03:03:09

58

Views

Closed immersion of locally ringed spaces vs closed immersion determined by ideal sheaf

Published on 15 Jan 2024 - 3:03

score 36 · Answer 13 · 2024-01-29 09:06:00

36

Views

Definition of a Prevariety - Specifically a covering by ringed spaces

Published on 29 Jan 2024 - 9:06

score 329 · Answer 14 · 2015-01-05 13:35:34

329

Views

A rigorous characterization for a ringed spaces to be isomorphic to an affine scheme.

Published on 05 Jan 2015 - 13:35

score 320 · Answer 15 · 2015-02-15 20:59:09

320

Views

When is a morphism of $k$-ringed spaces the morphism induced by pullbacks?

Published on 15 Feb 2015 - 20:59

List Question

A surjecive homomorphism of $ \mathbb R $-algebras

In what sense the "pullback at $ x $" map if functorial?

Finite product of supermanifold.

When can $\textbf{SpecMax}(R)$ be a scheme?

Closed subspace cut off by the ideal sheaf coming from a locally closed immersion

Closed subvariety is a subvariety

Pullback of structure sheaf along point inclusion into locally ringed space is residue field?

If $\mathfrak{p}_y$ the preimage of $\mathfrak{m}_x$ by $\mathcal{O}_Y(Y)\rightarrow\mathcal{O}_X(X)\rightarrow \mathcal{O}_{X,x}$, show that $f(x)=y$

Defining algebraic varieties in general

Let $(X,\mathcal{O}_X)$ be a locally ringed space, does there exists a monomorphism $\iota:U\rightarrow X$ for all open $U$?

Do morphisms of locally ringed spaces which agree on stalks agree on the whole of the locally ringed space?

Closed immersion of locally ringed spaces vs closed immersion determined by ideal sheaf

Definition of a Prevariety - Specifically a covering by ringed spaces

A rigorous characterization for a ringed spaces to be isomorphic to an affine scheme.

When is a morphism of $k$-ringed spaces the morphism induced by pullbacks?

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