List questions from schemes

Published on 26 Mar 2026 - 4:31

1k

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Functoriality of Morphisms to Affine Scheme

Published on 01 Oct 2015 - 3:43

226

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Sheaves with surjective map from the ring of global sections to stalks

Published on 02 Apr 2026 - 23:32

53

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A special presheaf of rings over the spectra $ \mathrm{Spec} A $.

Published on 27 Mar 2026 - 6:56

476

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Intersection of curves on surfaces and the sheaf $\mathcal O_{C\cap C'}$

Published on 27 Mar 2026 - 23:21

265

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Generic point and pull back

Published on 01 Apr 2026 - 3:45

433

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There exists a divisor linearly equivalent to $P$ not containing $P$

Published on 11 Oct 2015 - 23:40

505

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Reduced and not reduced points of a scheme.

Published on 12 Oct 2015 - 20:17

906

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Rational map is not defined on a subset of codimension $\geq 2$

Published on 30 Mar 2026 - 10:54

226

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$\Omega_X$ locally free $\implies$ $X$ smooth

Published on 15 Oct 2015 - 13:55

502

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What exactly does the Hilbert scheme of points parametrize?

Published on 09 Mar 2026 - 5:56

885

Views

Corollary of Riemann Roch theorem

Published on 19 Oct 2015 - 16:22

127

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$k$-structure on $K$-schemes

Published on 23 Feb 2026 - 13:25

814

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Understand the corrispondence between rational maps and linear systems.

Published on 25 Mar 2026 - 23:14

71

Views

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

Published on 23 Oct 2015 - 18:49

List Question

What does the Grothendieck's period conjecture mean?

Functoriality of Morphisms to Affine Scheme

Sheaves with surjective map from the ring of global sections to stalks

A special presheaf of rings over the spectra $ \mathrm{Spec} A $.

Intersection of curves on surfaces and the sheaf $\mathcal O_{C\cap C'}$

Generic point and pull back

There exists a divisor linearly equivalent to $P$ not containing $P$

Reduced and not reduced points of a scheme.

Rational map is not defined on a subset of codimension $\geq 2$

$\Omega_X$ locally free $\implies$ $X$ smooth

What exactly does the Hilbert scheme of points parametrize?

Corollary of Riemann Roch theorem

$k$-structure on $K$-schemes

Understand the corrispondence between rational maps and linear systems.

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

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