List questions from affine-schemes

Published on 10 May 2026 - 15:51

73

Views

Is $D(f)$ the smallest open set of $\operatorname{Spec}B$ such that $D_+(f)\subset D(f)$?

Published on 10 May 2026 - 13:51

46

Views

Are $u_1,u_2,\cdots,u_n$ independent in $M$?

Published on 31 Mar 2026 - 3:30

234

Views

Proof check for closed sub scheme of an affine scheme is affine

Published on 10 Apr 2026 - 21:22

589

Views

Functor of points of the affine line with double origin

Published on 14 Apr 2026 - 21:54

71

Views

A lemma about standard open sets of a scheme.

Published on 10 Apr 2026 - 12:45

203

Views

What is the tangent space of $\mathbb{Z}$ at $\mathfrak{p}=(5)$?

Published on 07 Apr 2026 - 16:21

491

Views

Kernel of a morphism of $k$-algebras

Published on 12 Apr 2026 - 22:41

395

Views

Question about Hartshorne Ch. II. 2 Proposition 2.2a (and basis for topology of Spec(A))

Published on 14 Apr 2026 - 11:13

234

Views

Zero-dimensional Hilbert scheme of two points and Hilbert-Chow morphism

Published on 13 Apr 2026 - 18:46

106

Views

Action of finite group of ring automorphisms

Published on 11 Apr 2026 - 17:33

222

Views

proposition II.5.9 in Hartshorne

Published on 12 Apr 2026 - 16:51

360

Views

When does a quasifinite surjective flat morphism have constant fiber multiplicity near a point?

Published on 10 May 2026 - 15:20

131

Views

Is constancy of fiber degree analytic-local on the source in a finite flat family?

Published on 10 May 2026 - 14:07

97

Views

Geometry of the subalgebra $\Bbbk[x^2-1]\leq \Bbbk[x]$ (intuition for integral elements)

Published on 04 May 2026 - 9:25

List Question

Question about meaning behind a map of schemes

Is $D(f)$ the smallest open set of $\operatorname{Spec}B$ such that $D_+(f)\subset D(f)$?

Are $u_1,u_2,\cdots,u_n$ independent in $M$?

Proof check for closed sub scheme of an affine scheme is affine

Functor of points of the affine line with double origin

A lemma about standard open sets of a scheme.

What is the tangent space of $\mathbb{Z}$ at $\mathfrak{p}=(5)$?

Kernel of a morphism of $k$-algebras

Question about Hartshorne Ch. II. 2 Proposition 2.2a (and basis for topology of Spec(A))

Zero-dimensional Hilbert scheme of two points and Hilbert-Chow morphism

Action of finite group of ring automorphisms

proposition II.5.9 in Hartshorne

When does a quasifinite surjective flat morphism have constant fiber multiplicity near a point?

Is constancy of fiber degree analytic-local on the source in a finite flat family?

Geometry of the subalgebra $\Bbbk[x^2-1]\leq \Bbbk[x]$ (intuition for integral elements)

Trending Questions

Popular # Hahtags

Popular Questions