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Hirzebruch–Riemann–Roch for coherent sheaves?

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#algebraic-geometry #homology-cohomology #sheaf-theory #sheaf-cohomology #coherent-sheaves
2.2k
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Details of gluing sheaves on a cover

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#algebraic-geometry #sheaf-theory #ringed-spaces
498
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Non-trivial presheaf of abelian groups with trivial stalks

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#abstract-algebra #algebraic-geometry #sheaf-theory
189
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Morphism between sheaves induces "isomorphic"(equivalent here?) maps on stalks

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#abstract-algebra #general-topology #algebraic-geometry #sheaf-theory
1.8k
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Question about left exactness of the section functor for sheaves

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#algebraic-geometry #sheaf-theory #exact-sequence #sheaf-cohomology
841
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If two sheaves have same stalks everywhere, then two sheaves are isomorphic?

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#abstract-algebra #algebraic-geometry #sheaf-theory
183
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twisting sheaf of toric projective bundle

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#algebraic-geometry #sheaf-theory #toric-geometry
784
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Chern Character of Dual Coherent Sheaf?

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#algebraic-geometry #homology-cohomology #sheaf-theory
247
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Stalk of sheaf of sections of sheaf of ring of regular functions is fraction field?

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#abstract-algebra #algebraic-geometry #sheaf-theory
74
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Closed subschemes in closed subschemes

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#sheaf-theory #schemes
1k
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A sheaf is flasque if all restriction maps are surjective

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#algebraic-geometry #sheaf-theory
63
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what is the relation between Sh(SpecA) and $O_{SpecA}$-Mod

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#algebraic-geometry #category-theory #sheaf-theory
304
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Does sheafification preserve flasqueness?

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#general-topology #sheaf-theory
602
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How to use adjointness properties of sheafification to show limits/colimits are preserved

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#category-theory #sheaf-theory #adjoint-functors #limits-colimits
280
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Difference between rings of continuous functions on $[0,1]$ and $(0,1)$.

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#abstract-algebra #functional-analysis #algebraic-geometry #ring-theory #sheaf-theory

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