List questions from affine-schemes

Published on 22 Dec 2015 - 13:42

526

Views

Chinese remainder theorem as sheaf condition?

Published on 21 Mar 2026 - 21:55

203

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Description of the equalizer of $\prod _j R/I_j \rightrightarrows \prod _{i,j}R/(I_i+I_j)$

Published on 06 Jan 2016 - 16:38

121

Views

Justification for thinking of modules over commutative rings as modules of generalized functions?

Published on 08 Jan 2016 - 11:44

359

Views

Geometric intuition behind $V(M)=\operatorname{Spec}(\operatorname{Sym}(M))$?

Published on 10 Jan 2016 - 10:11

263

Views

If $X$ is a closed set in $\mathbb{A}^n$, is $\mathcal O_X$ the inverse image sheaf of $\mathcal O_{\mathbb{A}^n}$?

Published on 23 Jan 2016 - 18:47

1.4k

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Residue fields of schemes of finite type (over $\mathbb{Z}$)

Published on 26 Jan 2016 - 14:42

249

Views

Geometric intuition for normalization as intersection of valuation rings?

Published on 31 Jan 2016 - 21:05

75

Views

Infinitely many non-isomorphic degree 8, dimension zero schemes in the plane

Published on 04 Feb 2016 - 19:50

335

Views

Does $\operatorname{Spec}$ preserve pushouts?

Published on 06 Feb 2016 - 14:50

526

Views

Injectivity of associate map of affine scheme homomorphism

Published on 09 Feb 2016 - 19:11

603

Views

Does affine open set equal to distinguished open subset in an affine scheme?

Published on 21 Feb 2016 - 17:33

181

Views

Cohomology of affine hypersurface

Published on 23 Feb 2026 - 1:44

385

Views

Geometrical meaning of $\operatorname{Spec}\widehat{\mathcal O}_{X,x}$

Published on 11 Mar 2016 - 12:50

428

Views

A question about Weil restriction

Published on 21 Apr 2016 - 11:57

List Question

Geometric meaning of prime elements?

Chinese remainder theorem as sheaf condition?

Description of the equalizer of $\prod _j R/I_j \rightrightarrows \prod _{i,j}R/(I_i+I_j)$

Justification for thinking of modules over commutative rings as modules of generalized functions?

Geometric intuition behind $V(M)=\operatorname{Spec}(\operatorname{Sym}(M))$?

If $X$ is a closed set in $\mathbb{A}^n$, is $\mathcal O_X$ the inverse image sheaf of $\mathcal O_{\mathbb{A}^n}$?

Residue fields of schemes of finite type (over $\mathbb{Z}$)

Geometric intuition for normalization as intersection of valuation rings?

Infinitely many non-isomorphic degree 8, dimension zero schemes in the plane

Does $\operatorname{Spec}$ preserve pushouts?

Injectivity of associate map of affine scheme homomorphism

Does affine open set equal to distinguished open subset in an affine scheme?

Cohomology of affine hypersurface

Geometrical meaning of $\operatorname{Spec}\widehat{\mathcal O}_{X,x}$

A question about Weil restriction

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