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15
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Pushforward of quasi-coherent sheaves to quotient stack for finite group action?

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#algebraic-geometry #finite-groups #modules #derived-functors #algebraic-stacks
173
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Map from schemes to stacks

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#algebraic-geometry #principal-bundles #grothendieck-topologies #algebraic-stacks
268
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Examples of Stacks

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#algebraic-geometry #algebraic-stacks
440
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Showing $GL_n$ is a special algebraic group

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#algebraic-geometry #schemes #principal-bundles #algebraic-stacks
99
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Object of a Category $C$ acts as Functor

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#algebraic-geometry #category-theory #groupoids #algebraic-stacks
158
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Calculating etale cohomology of Picard stack

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#algebraic-geometry #etale-cohomology #algebraic-stacks
3.7k
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Why is this called the cocycle condition?

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#homology-cohomology #algebraic-stacks
791
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Automorphisms and moduli problems

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#algebraic-geometry #moduli-space #algebraic-stacks
126
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Grothendieck topology on stacks/fibred category

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#category-theory #grothendieck-topologies #algebraic-stacks #topological-stacks
133
Views

Making $H^*(\mathbf{P}^\infty)=\lim H^*(\mathbf{P}^n)=k[t]$ precise using stacks

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#algebraic-geometry #homology-cohomology #etale-cohomology #algebraic-stacks
270
Views

References for Higgs bundles

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#reference-request #moduli-space #algebraic-stacks
158
Views

Generalized Behrend version for Grothendieck-Lefschetz trace formula

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#algebraic-geometry #etale-cohomology #algebraic-stacks #trace-map
430
Views

Visualization of an algebraic stack

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#algebraic-geometry #visualization #algebraic-stacks
101
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Expressing the punctured affine plane as a quotient.

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#algebraic-geometry #homotopy-theory #algebraic-groups #algebraic-stacks
52
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Reference requence: scheme of complete homomorphisms of rank $r$ via blowups.

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#algebraic-geometry #reference-request #schemes #algebraic-stacks

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