List questions from schemes

Published on 14 Apr 2026 - 3:44

170

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Points on base-change of group scheme

Published on 11 Apr 2026 - 14:17

38

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Germs near to a closed subscheme

Published on 11 Apr 2026 - 11:03

102

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motivation for regular schemes

Published on 10 Apr 2026 - 12:21

94

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Morphisms from laurent series to Projective space

Published on 10 Apr 2026 - 14:19

96

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Why does $\operatorname{Spec}(\mathbb{C}[[X]])-\langle X\rangle$ "have topological properties identical" to $C^1$? (Mumford's Red Book)

Published on 16 Apr 2026 - 1:39

82

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Show that in a quasi-compact scheme every point has a closed point in its closure, via Zorn's lemma

Published on 15 Apr 2026 - 13:19

116

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diagonal morphism preserves properties that are satisfied by isomorphisms under base-change

Published on 15 Apr 2026 - 23:55

68

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Ideal sheaf of $Z$ twisted by $Z$

Published on 13 Apr 2026 - 10:20

225

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Closed points of $\text{Proj}(\mathbb R[x,y,z]/(x^2+y^2+z^2))$

Published on 16 Apr 2026 - 8:44

45

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invariant closed subset under group scheme action (Mumford GIT)

Published on 26 Mar 2026 - 1:00

86

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Dominant map is dominant in generic fiber

Published on 16 Apr 2026 - 15:34

70

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Dimension of the singular locus of a monomial hypersurface

Published on 15 Apr 2026 - 14:01

48

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Maximal Proper Subschemes of $\operatorname{GL}_n$

Published on 12 Apr 2026 - 5:53

192

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Line Bundle which trivializes over generic fiber

Published on 14 Apr 2026 - 1:43

List Question

An element in a ring reduced modulo a prime ideal

Points on base-change of group scheme

Germs near to a closed subscheme

motivation for regular schemes

Morphisms from laurent series to Projective space

Why does $\operatorname{Spec}(\mathbb{C}[[X]])-\langle X\rangle$ "have topological properties identical" to $C^1$? (Mumford's Red Book)

Show that in a quasi-compact scheme every point has a closed point in its closure, via Zorn's lemma

diagonal morphism preserves properties that are satisfied by isomorphisms under base-change

Ideal sheaf of $Z$ twisted by $Z$

Closed points of $\text{Proj}(\mathbb R[x,y,z]/(x^2+y^2+z^2))$

invariant closed subset under group scheme action (Mumford GIT)

Dominant map is dominant in generic fiber

Dimension of the singular locus of a monomial hypersurface

Maximal Proper Subschemes of $\operatorname{GL}_n$

Line Bundle which trivializes over generic fiber

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