Modular intersection cohomology of Drinfeld's compactifications
We compute the dimension of the cohomology of stalks of intersection cohomology complexes on Zastava schemes and Drinfeld compactifications associated with a connected reductive algebraic group $G$, in case the characteristic of the coefficients field $\Bbbk$ is good for $G$. In particular, we show that these dimensions do not depend on the choice of $\Bbbk$.
Authors
- Simon Riche (ORCID: https://orcid.org/0000-0002-8697-0854)
- Gurbir Dhillon (ORCID: https://orcid.org/0000-0002-3894-538X)
- Pramod N. Achar (ORCID: https://orcid.org/0000-0002-3447-5165)
Institutions
- UCLA Health (US)
- Laboratoire de Mathématiques Blaise Pascal (FR)
Publication Details
- Journal
- ArXiv.org
- Published
- 2025-05-23
- Primary Topic
- Homotopy and Cohomology in Algebraic Topology
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- European Commission