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15
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Smoothness is a geometric property

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#algebraic-geometry #field-theory #schemes #projective-geometry #projective-schemes
63
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Subset of a scheme where a section vanishes

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#algebraic-geometry #schemes
269
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Surjectivity of proper morphism

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#algebraic-geometry #schemes
122
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Diagonal action by $\mathbb{Z}/2$ on $\mathbb{P}^1 \times \mathbb{P}^1$

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#algebraic-geometry #group-actions #schemes
176
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Basics about action on a Scheme by finite Group

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#algebraic-geometry #group-actions #schemes
62
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Can a closed subset of a scheme $X$ be a support?

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#algebraic-geometry #sheaf-theory #schemes
596
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Morphisms between affine schemes

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#algebraic-geometry #schemes
290
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Question on Smooth Completion of curves

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#algebraic-geometry #schemes #algebraic-curves #projective-schemes
271
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Understanding Hartshorne's example II 3.2.2

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#algebraic-geometry #schemes #affine-schemes #morphism
363
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Localization of sheaves

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#algebraic-geometry #schemes
204
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Localization of sheaves: 'particular' proof wanted

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#algebraic-geometry #sheaf-theory #schemes
133
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Blowup extends a regular map to $\mathbb{P}^{N+1}$

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#algebraic-geometry #complex-geometry #schemes #blowup
465
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Is a subfunctor of a representable functor also representable?

Published on
#reference-request #category-theory #schemes #representable-functor
377
Views

Projective space as the glue of affine schemes: checking the cocycle condition

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#algebraic-geometry #solution-verification #schemes #projective-space
259
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$k$-rational points of the automorphism functor of a scheme

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#algebraic-geometry #schemes #algebraic-groups #group-schemes

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