Question

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

score 779 · Answer 1 · 2026-03-22 14:19:37

779

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

Published on 22 Mar 2026 - 14:19

score 129 · Answer 2 · 2026-03-19 20:28:06

129

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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 19 Mar 2026 - 20:28

score 654 · Answer 3 · 2026-03-17 18:21:44

654

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

Published on 17 Mar 2026 - 18:21

score 73 · Answer 4 · 2026-03-13 04:46:36

73

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

Published on 13 Mar 2026 - 4:46

score 83 · Answer 5 · 2026-03-22 16:02:42

83

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

Published on 22 Mar 2026 - 16:02

score 599 · Answer 6 · 2026-03-23 03:02:26

599

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Affine Schemes and Basic Open Sets

Published on 23 Mar 2026 - 3:02

score 363 · Answer 7 · 2026-03-23 08:02:45

363

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

Published on 23 Mar 2026 - 8:02

score 96 · Answer 8 · 2026-03-23 00:26:25

96

Views

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

Published on 23 Mar 2026 - 0:26

score 356 · Answer 9 · 2026-03-22 17:19:14

356

Views

(Connected) non-contractible schemes

Published on 22 Mar 2026 - 17:19

score 281 · Answer 10 · 2026-03-23 12:10:41

281

Views

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

Published on 23 Mar 2026 - 12:10

score 243 · Answer 11 · 2026-03-22 16:13:07

243

Views

characterization of affine open sets in an affine scheme

Published on 22 Mar 2026 - 16:13

score 145 · Answer 12 · 2026-03-25 01:20:31

145

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

Published on 25 Mar 2026 - 1:20

score 2.3k · Answer 13 · 2026-03-24 23:50:53

2.3k

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two intersection of affine open subsets

Published on 24 Mar 2026 - 23:50

score 98 · Answer 14 · 2026-03-25 01:18:18

98

Views

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

Published on 25 Mar 2026 - 1:18

score 84 · Answer 15 · 2026-03-25 04:57:05

84

Views

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

Published on 25 Mar 2026 - 4:57

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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