6 papers · 1 filter
Local multiplicities for an equivariantly enriched non-transverse Bézout's theorem
Candace Bethea, Charanya Ravi
We introduce the degree and local degree in equivariant motivic homotopy theory for the purpose of studying equivariant enumerative problems over general fields. Given a finite, ta…
The stacky concentration theorem
Dhyan Aranha, Adeel A. Khan, Alexei Latyntsev +2
We give a sufficient criterion for the Chow or algebraic bordism groups of an algebraic stack, localized at a set of Chern classes of line bundles, to be concentrated in some close…
Cohomological and categorical concentration
Adeel A. Khan, Charanya Ravi
Given a torus action on a compact space X, a fundamental result of Borel and Atiyah-Segal asserts that the equivariant cohomology of X is concentrated in the fixed locus X^T, up to…
Virtual equivariant Grothendieck-Riemann-Roch formula
Charanya Ravi, Bhamidi Sreedhar
For a -scheme with a given equivariant perfect obstruction theory, we prove a virtual equivariant Grothendieck-Riemann-Roch formula, this is an extension of a result of Fant…
Rigidity for equivariant pseudo pretheories
Jeremiah Heller, Charanya Ravi, Paul Arne Østvær
We prove versions of the Suslin and Gabber rigidity theorems in the setting of equivariant pseudo pretheories of smooth schemes over a field with an action of a finite group. Examp…
A Grothendieck-Lefschetz theorem for equivariant Picard groups
Charanya Ravi
We prove a Grothendieck-Lefschetz theorem for equivariant Picard groups of non-singular varieties with finite group actions.