2 papers
math.AG2022
Twisted equivariant HKR theorem for torus action and the small quantum group
Nicolas Hemelsoet
We show that when a torus acts on a smooth variety , the twisted HKR isomorphism is equivariant. The main consequence is that the Bezrukavnikov- Lachowska isomorphism, relat…
math.RT2019
A computer algorithm for the BGG resolution
Nicolas Hemelsoet, Rik Voorhaar
We present a computer algorithm to explicitly compute the BGG resolution and its cohomology. We give several applications, in particular computation of various sheaf cohomology gro…