4 papers
Critical CoHAs, vertex coalgebras and Deformed Drinfeld coproducts
Shivang Jindal, Sarunas Kaubrys, Alexei Latyntsev
We construct a vertex coproduct on the Kontsevich--Soibelman cohomological Hall algebra (CoHA) of a quiver with potential, following Joyce (2018). We show it forms a vertex bialgeb…
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…
Virtual localization revisited
Dhyan Aranha, Adeel A. Khan, Alexei Latyntsev +2
Let be a split torus acting on an algebraic scheme with fixed locus . Edidin and Graham showed that on localized -equivariant Chow groups, (a) push-forward alon…
Orthosymplectic modules of cohomological Hall algebras
Samuel DeHority, Alexei Latyntsev
We study modules and comodules for cohomological Hall algebras equipped with their vertex coproducts arising as objects with classical type stabilizer groups. Specifically we consi…