139

Questions

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How can one compute the cohomology of $i'^*C$, for $i':\mathbb{A}^{N-1}\setminus \{0\}\to \mathbb{A}^{N}\setminus \{0\} $?

sheaf-cohomology ag.algebraic-geometry etale-cohomology at.algebraic-topology sheaf-theory

nov 5 at 20:56 Mikhail Bondarko 5,936●1●4●21

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How would you say that a small category is embedded into functors from a large $C'$ to abelian groups?

ct.category-theory set-theory reference-request

apr 8 at 5:00 Mikhail Bondarko 5,936●1●4●21

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Some ‘weak proper and smooth base change’ theorems for Nisnevich sheaves?

ag.algebraic-geometry nisnevich-topology etale-cohomology

jan 9 at 10:27 Mikhail Bondarko 5,936●1●4●21

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A composition of a finite morphisms with the transpose correspondence: is it the multiplication by the degree?

intersection-theory motives ag.algebraic-geometry

nov 21 10 at 7:26 Sasha 10.1k●1●7●17

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Any examples known of $K^b(B)$ localized by a set of morphisms (i.e. of complexes of length 1)?

homological-algebra triangulated-categories

nov 7 10 at 9:52 Mikhail Bondarko 5,936●1●4●21

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Another stupid question on l-adic sheaves: does a generically zero constructible sheaf vanish on an open subvariety?

sheaf-theory etale-cohomology

nov 9 10 at 19:44 Mikhail Bondarko 5,936●1●4●21

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Is it easy to define weights for $Q_l$-sheaves over finite type $Z[1/l]$-schemes?

perverse-sheaves arithmetic-geometry ag.algebraic-geometry

feb 8 11 at 15:52 Alex 1,324●6●6

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More on universal homeomorphisms

schemes characteristic-p ag.algebraic-geometry

mar 20 11 at 12:38 Angelo 19.8k●3●47●75

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When inverse image is conservative; a reference or a generalization?

etale-cohomology schemes ag.algebraic-geometry reference-request

mar 17 11 at 9:24 Mikhail Bondarko 5,936●1●4●21

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Which statement do people usually call the Decomposition Theorem, and what is the precise reference for it?

decomposition-theorem reference-request perverse-sheaves ag.algebraic-geometry

feb 2 11 at 1:28 Mikhail Bondarko 5,936●1●4●21