List questions from projective-schemes

Published on 22 Mar 2026 - 15:36

102

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Is it possible that irreducible components of curves have greater genus than the original curve?

Published on 05 Jun 2018 - 16:12

304

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Why don't these morphisms extend?

Published on 22 Mar 2026 - 5:24

69

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

Published on 04 Aug 2018 - 4:12

68

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what's the meaning of $B_m/f^n$?

Published on 17 Mar 2026 - 2:01

198

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Maps between projective spaces induced by singular matrices

Published on 20 Mar 2026 - 7:08

46

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Projective Nullstellensatz and regular rings

Published on 22 Mar 2026 - 12:47

76

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Example of family of integral curves with constant gonality and increasing genus

Published on 25 Sep 2018 - 8:11

471

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Differential 1-forms on an irreducible projective variety

Published on 22 Mar 2026 - 22:12

256

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Graded global sections of Proj(S) for S a polynomial ring and more general

Published on 08 Dec 2018 - 9:27

121

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Non split real form of projective space

Published on 22 Mar 2026 - 10:57

203

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Connected Smooth Projective curve $C$ is rational if unirational

Published on 28 Dec 2018 - 5:07

84

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Why is there a correspondence between $ |\text{Proj}\;S| - V(f) $ and $ \text{Spec}\; (S_{f})_{0}$?

Published on 08 Jan 2019 - 15:59

1k

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Affine charts are dense in projective space

Published on 22 Mar 2026 - 17:32

294

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Automorphism Group of a Variety acts on Local Sections

Published on 17 Mar 2026 - 0:35

List Question

Restriction of Tautological Sheaf to a Fiber

Is it possible that irreducible components of curves have greater genus than the original curve?

Why don't these morphisms extend?

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

what's the meaning of $B_m/f^n$?

Maps between projective spaces induced by singular matrices

Projective Nullstellensatz and regular rings

Example of family of integral curves with constant gonality and increasing genus

Differential 1-forms on an irreducible projective variety

Graded global sections of Proj(S) for S a polynomial ring and more general

Non split real form of projective space

Connected Smooth Projective curve $C$ is rational if unirational

Why is there a correspondence between $ |\text{Proj}\;S| - V(f) $ and $ \text{Spec}\; (S_{f})_{0}$?

Affine charts are dense in projective space

Automorphism Group of a Variety acts on Local Sections

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