List questions from algebraic-geometry

Published on 11 Apr 2026 - 9:46

78

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Why are exterior products so much "wigglier" than symmetric and tensor products?

Published on 13 Apr 2026 - 10:54

110

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Classification of finite flat maps from $X$ to $\mathbb P^n$

Published on 12 Apr 2026 - 17:57

1.7k

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direct image functor $f_*$ left exact

Published on 02 Mar 2019 - 3:39

133

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Clarifying a step in an answer about exterior products of coherent sheaves

Published on 25 Mar 2026 - 9:43

201

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Map between global sections of a flat morphism is flat

Published on 29 Mar 2026 - 3:20

67

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Holomorphic morphism sending given curves to give points

Published on 25 Mar 2026 - 9:25

83

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Ideal of an affine variety

Published on 13 Apr 2026 - 14:30

292

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Unramified morphism of schemes: why is "finite" put in parentheses in the statement of this proposition

Published on 13 Apr 2026 - 3:16

151

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Condition on the stalks for a morphism $X \rightarrow S$ to be unramified

Published on 11 Apr 2026 - 16:32

102

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Ideal generated by $yw-x^2$ and $z^2w-2xyz+y^3$ is not radical

Published on 12 Apr 2026 - 8:32

174

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Holomorphic morphisms cannot be extended to codimension $2$

Published on 25 Mar 2026 - 9:25

164

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How is sheaf cohomology used in scheme theory?

Published on 11 Apr 2026 - 23:43

350

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Surjectivity Stable under Base Change: Reduction Step

Published on 28 Mar 2026 - 23:57

387

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Veronese Embedding for Schemes

Published on 13 Apr 2026 - 15:05

List Question

Čech cohomology of a contractible space with integer coefficients

Why are exterior products so much "wigglier" than symmetric and tensor products?

Classification of finite flat maps from $X$ to $\mathbb P^n$

direct image functor $f_*$ left exact

Clarifying a step in an answer about exterior products of coherent sheaves

Map between global sections of a flat morphism is flat

Holomorphic morphism sending given curves to give points

Ideal of an affine variety

Unramified morphism of schemes: why is "finite" put in parentheses in the statement of this proposition

Condition on the stalks for a morphism $X \rightarrow S$ to be unramified

Ideal generated by $yw-x^2$ and $z^2w-2xyz+y^3$ is not radical

Holomorphic morphisms cannot be extended to codimension $2$

How is sheaf cohomology used in scheme theory?

Surjectivity Stable under Base Change: Reduction Step

Veronese Embedding for Schemes

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