List questions from projective-schemes | MathQa

Why is $ \mathrm{Spec} \ A [T_1 , \dots , T_n ] \to \mathrm{Proj} \ A [T_0 , \dots , T_n ] $ an embedding?

Published on 05 Jun 2025 - 19:46

Very basic question on projective bundles: Why is the fiber a vector space?

Published on 03 Jun 2025 - 7:18

twist and product of projective spaces

Published on 03 Jun 2025 - 18:19

Are $ \mathbb{A}^n (k ) = k^n $ and $ \mathbb{P}^{n} (k) = \mathrm{Proj} \ k[X_0 , \dots , X_n ]$ irreducibles?

Published on 03 Jun 2025 - 23:28

Construction of relative projective space via glueing

Published on 03 Jun 2025 - 9:52

What is the "module of twisted global sections"?

Published on 26 May 2025 - 7:25

Global sections of Proj

Published on 04 Jun 2025 - 14:38

Relation between stalks of twisted sheaf and structure sheaf

Published on 04 Jun 2025 - 14:38

Usefulness of the notion of Hilbert scheme in algebraic geometry.

Published on 05 Jun 2025 - 10:08

Question about proof that the Grassmannian is a parameter space

Published on 05 Jun 2025 - 10:12