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15
282
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Zariski closure of a set in $k^3$

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#algebraic-geometry #affine-varieties #zariski-topology
308
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Computing a canonical divisor

Published on
#algebraic-geometry #commutative-algebra
635
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When does the direct image functor respect direct sums of sheaves?

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#algebraic-geometry #category-theory #schemes #adjoint-functors #coherent-sheaves
216
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Pull back of twisted sheaf under a regular map associated to a base point free linear system

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#algebraic-geometry #commutative-algebra #sheaf-theory #divisors-algebraic-geometry
117
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Two statements related to tangent developables

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#algebraic-geometry #algebraic-curves
127
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Map between curves and integral points

Published on
#number-theory #algebraic-geometry #elliptic-curves
334
Views

effect on Chern classes of tensoring with $\mathcal{O}(n)$

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#algebraic-geometry #reference-request #vector-bundles #characteristic-classes
194
Views

Very Explicit Unit/Counit of the Inverse/Direct Image Adjunction

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#algebraic-geometry #category-theory #sheaf-theory
67
Views

Separability and linear dependence

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#linear-algebra #abstract-algebra #algebraic-geometry
312
Views

flatness & integral closure

Published on
#algebraic-geometry #commutative-algebra #flatness
116
Views

Spec of infinite product of rings is not an infinite disjoint union

Published on
#proof-verification #algebraic-geometry
1k
Views

$V(I)$ consists of a finite set of points if and only $k[x_1,\ldots,x_n]/I$ has Krull dimension zero

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#abstract-algebra #algebraic-geometry #ring-theory #commutative-algebra #dimension-theory-algebra
262
Views

The Lie algebra of $PGL(2)$ and its correspondence to automorphisms of the projective line.

Published on
#algebraic-geometry
237
Views

A problem about projective variety

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#abstract-algebra #algebraic-geometry
86
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Let $h:X\to Y$ a morphism of varieties. It is generally true that $h(X)$ is a subvariety of $Y$?

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#abstract-algebra #geometry #algebraic-geometry #commutative-algebra

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