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Lines bundles in projective space

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#algebraic-geometry #sheaf-theory #vector-bundles #sheaf-cohomology
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Sheaf morphisms, images, cokernels and stalks

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#sheaf-theory
1.9k
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image presheaf is not a sheaf

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#algebraic-geometry #sheaf-theory
196
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When is a sheaf isomorphic to a constant sheaf?

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#sheaf-theory
336
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Exactness of sequence of sheaves of abelian group implies exactness of sequence of sections as a group.

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#algebraic-geometry #sheaf-theory
707
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Partition of Unity in Algebraic Geometry (Eisenbud 2.19)

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#algebraic-geometry #commutative-algebra #sheaf-theory
1.6k
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Example of a local system

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#sheaf-theory
258
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Bijection between $k$-rational points and sections of a $k$-scheme $\pi \colon X \to Spec(k)$

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#algebraic-geometry #sheaf-theory
78
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For a locally closed subspace $Z$, what is the name of this functor $F \mapsto F_Z$ on abelian sheaves?

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#reference-request #sheaf-theory #sheaf-cohomology
42
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Difference between Homogeneous first order operator and Homogeneous first order differential operator

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#smooth-manifolds #sheaf-theory #global-analysis
818
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Riemann-Roch Theorem over Algebraic Surface

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#algebraic-geometry #sheaf-theory #vector-bundles #sheaf-cohomology #divisors-algebraic-geometry
105
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Ext preserves the tensor

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#sheaf-theory #sheaf-cohomology #derived-functors
138
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Definition of a sheaf: Require the covering of an open set U to be non-disjoint?

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#algebraic-geometry #complex-geometry #sheaf-theory
239
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Characterization of ideal sheaf

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#algebraic-geometry #homological-algebra #sheaf-theory
66
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Sections of the sheaf of algebraic functions

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#general-topology #differential-geometry #commutative-algebra #sheaf-theory #vector-bundles

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