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15
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Minimal site that induces a stack from a psuedofunctor

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#category-theory #grothendieck-topologies #grothendieck-construction #topological-stacks
217
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Coincidence of classical notion of covering in classical topology and covering sieve in grothendieck topology

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#general-topology #category-theory #topos-theory #grothendieck-topologies
93
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Locality in Grothendieck Topologies

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#algebraic-geometry #topos-theory #grothendieck-topologies
297
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"Coverings" and "covers" in Grothendieck topologies

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#general-topology #category-theory #grothendieck-topologies
55
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Grothendieck sites based on large categories?

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#category-theory #set-theory #grothendieck-topologies
222
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The étale topos is coherent: does the scheme need to be quasicompact?

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#compactness #schemes #topos-theory #etale-cohomology #grothendieck-topologies
50
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Is it known that the etale topology on schemes does not have cd structure?

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#reference-request #grothendieck-topologies
164
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Map from schemes to stacks

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#algebraic-geometry #principal-bundles #grothendieck-topologies #algebraic-stacks
161
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What changes in the sheaf theory of topological spaces with the "étale topology"?

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#general-topology #sheaf-theory #grothendieck-topologies
211
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Grothendieck Universe

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#category-theory #definition #grothendieck-topologies
276
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Set theoretic issues in the definition of a site in Stacks Project

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#algebraic-geometry #category-theory #set-theory #sheaf-theory #grothendieck-topologies
193
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Sheaf Axiom for Presheaves on Sites

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#algebraic-geometry #sheaf-theory #grothendieck-topologies
170
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(Pre)sheaf epimorphism admits a section?

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#category-theory #sheaf-theory #grothendieck-topologies
176
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Is there a fiber bundle/espace-etale interpretation of sheaves on a Grothendieck site

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#algebraic-geometry #category-theory #sheaf-theory #etale-cohomology #grothendieck-topologies
1.4k
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Kummer sequence etale topology

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#algebraic-geometry #etale-cohomology #grothendieck-topologies

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