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Function vanishing on ringed spaces

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#algebraic-geometry #schemes #ringed-spaces
107
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A global section "is" a map to $\mathbb{A}^1$

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#algebraic-geometry #schemes
72
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Equivalence of definitions of blowup of $\mathbb{A}^2_k$ at the origin

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#algebraic-geometry #schemes
52
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A map of degree $d$ to $\mathbb{P}^1$ admits infinitely many points of degree $d$

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#algebraic-geometry #schemes
895
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Reference request: Bundles in Algebraic Geometry

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#algebraic-geometry #reference-request #vector-bundles #schemes #quasicoherent-sheaves
268
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Does pull-back commute with taking direct sums?

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#algebraic-geometry #schemes
159
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Proof that a scheme is integral iff it is reduced and irreducible.

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#algebraic-geometry #schemes #affine-schemes
61
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What is the natural linearization on differentials?

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#group-actions #schemes #algebraic-groups
84
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Why is this point fixed?

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#schemes #algebraic-groups #geometric-invariant-theory
230
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Question on Hartshorne Theorem II.4.9

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#algebraic-geometry #schemes
38
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Is this closed point also open?

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#algebraic-geometry #schemes
116
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Must every $\mathbb Z$-shaped point of an arithmetic scheme be contained in an affine open subscheme?

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#algebraic-geometry #schemes #arithmetic-geometry #synthetic-differential-geometry
89
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Open subschemes of integral schemes determined by image in stalk?

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#algebraic-geometry #schemes
88
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Is Category of schemes locally small?

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#schemes #group-schemes
133
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Quasicompactness in terms of morphisms and $\operatorname{Spec} \mathbb{Z}$

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#algebraic-geometry #schemes #zariski-topology

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