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15
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Inclusion of closed subschemes.

Published on
#algebraic-geometry #sheaf-theory #schemes
75
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How does isomorphism of schemes induce maps on cohomology groups

Published on
#algebraic-geometry #sheaf-theory #sheaf-cohomology
187
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Perversity and minimal extension functor

Published on
#algebraic-geometry #sheaf-theory #sheaf-cohomology
448
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Sheaf cohomology and singular cohomology

Published on
#algebraic-topology #sheaf-theory #sheaf-cohomology
52
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Does $\deg_k F(-D)/F = \deg_k D$ hold for effective divisors $D$ and coherent, torsion-free $\mathcal{O}_X$-modules $F$?

Published on
#algebraic-geometry #sheaf-theory #algebraic-curves #divisors-algebraic-geometry
164
Views

Chow groups with coefficients in a local system

Published on
#algebraic-geometry #reference-request #sheaf-theory #sheaf-cohomology #local-systems
188
Views

If restricted morphism of ringed spaces are equal, then they are actually equal

Published on
#sheaf-theory #ringed-spaces
370
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A trace map for $\operatorname{End}_{\mathcal{O}_X}(\mathcal F)$ of a locally free sheaf of finite rank

Published on
#algebraic-geometry #tensor-products #sheaf-theory #vector-bundles #trace
263
Views

Generators for category of abelian presheaves

Published on
#category-theory #sheaf-theory
52
Views

Is the total ring of fractions mod the regular functions flasque?

Published on
#algebraic-geometry #sheaf-theory #sheaf-cohomology
593
Views

Explicit sections after sheafification

Published on
#sheaf-theory
315
Views

Adjoint property of $f^{-1}$ and $f_*$.

Published on
#algebraic-geometry #sheaf-theory
24
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Exact sequences of $\mathcal{O}_X$-modules, sections over X minus a point, and splitting

Published on
#sheaf-theory #schemes
57
Views

When is it the case that all closed immersions of all irreducible components are flat?

Published on
#algebraic-geometry #sheaf-theory #algebraic-curves
257
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Graded global sections of Proj(S) for S a polynomial ring and more general

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#algebraic-geometry #sheaf-theory #schemes #graded-rings #projective-schemes

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