Question

Can find common principal open subsets in the intersection of two open affine subschemes

score 786 · Answer 1 · 2026-05-10 12:32:17

786

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Can find common principal open subsets in the intersection of two open affine subschemes

Published on 10 May 2026 - 12:32

score 138 · Answer 2 · 2026-05-07 14:31:37

138

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Give an example of a scheme $X$ so that the asbolute Frobenius morphism induces an isomorphism on global sections.

Published on 07 May 2026 - 14:31

score 661 · Answer 3 · 2026-05-05 15:56:23

661

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$K(Y)$ is isomorphic to the quotient field of $A(Y).$

Published on 05 May 2026 - 15:56

score 81 · Answer 4 · 2026-05-07 08:51:59

81

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References for sufficiency of tangential criteria for formally smooth/unramified/étale morphisms

Published on 07 May 2026 - 8:51

score 90 · Answer 5 · 2026-05-06 07:42:39

90

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Geometric viewpoint on $\Bbbk[t]\to \Bbbk(t)$ not being of finite type

Published on 06 May 2026 - 7:42

score 606 · Answer 6 · 2026-05-05 12:34:06

606

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Affine Schemes and Basic Open Sets

Published on 05 May 2026 - 12:34

score 369 · Answer 7 · 2026-04-29 12:52:09

369

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compute $ \operatorname{Spec}\mathbb{Z}[x,y]/(x^2+y^2-n) $

Published on 29 Apr 2026 - 12:52

score 102 · Answer 8 · 2026-05-10 15:51:35

102

Views

Meaning of $f$ being a function on $\text{Spec}(A)$

Published on 10 May 2026 - 15:51

score 363 · Answer 9 · 2026-05-05 15:22:57

363

Views

(Connected) non-contractible schemes

Published on 05 May 2026 - 15:22

score 287 · Answer 10 · 2026-05-05 07:08:25

287

Views

Dimension of the tangent cone of $V(\mathfrak{a})$

Published on 05 May 2026 - 7:08

score 248 · Answer 11 · 2026-04-28 16:39:16

248

Views

characterization of affine open sets in an affine scheme

Published on 28 Apr 2026 - 16:39

score 149 · Answer 12 · 2026-05-10 12:34:07

149

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What is connection between Modules and Fields in mathematics ? Is maybe quotient of the action / space of coinvariants?

Published on 10 May 2026 - 12:34

score 2.3k · Answer 13 · 2026-05-10 12:30:56

2.3k

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two intersection of affine open subsets

Published on 10 May 2026 - 12:30

score 104 · Answer 14 · 2026-05-10 12:34:29

104

Views

Computing tensor product $k[t]/(t^p) \otimes_{k[x,y]/(x^p,y^p)} k[t]/(t^p)$

Published on 10 May 2026 - 12:34

score 87 · Answer 15 · 2026-05-10 12:32:36

87

Views

How does the closed schemes between $X$ and $X_{red}$ look like?

Published on 10 May 2026 - 12:32

List Question

Can find common principal open subsets in the intersection of two open affine subschemes

Give an example of a scheme $X$ so that the asbolute Frobenius morphism induces an isomorphism on global sections.

$K(Y)$ is isomorphic to the quotient field of $A(Y).$

References for sufficiency of tangential criteria for formally smooth/unramified/étale morphisms

Geometric viewpoint on $\Bbbk[t]\to \Bbbk(t)$ not being of finite type

Affine Schemes and Basic Open Sets

compute $ \operatorname{Spec}\mathbb{Z}[x,y]/(x^2+y^2-n) $

Meaning of $f$ being a function on $\text{Spec}(A)$

(Connected) non-contractible schemes

Dimension of the tangent cone of $V(\mathfrak{a})$

characterization of affine open sets in an affine scheme

What is connection between Modules and Fields in mathematics ? Is maybe quotient of the action / space of coinvariants?

two intersection of affine open subsets

Computing tensor product $k[t]/(t^p) \otimes_{k[x,y]/(x^p,y^p)} k[t]/(t^p)$

How does the closed schemes between $X$ and $X_{red}$ look like?

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