Counting using equivariant cohomology
- π€ Speaker: Anand Deopurkar (Australian National University)
- π Date & Time: Thursday 25 January 2024, 11:45 - 12:45
- π Venue: Seminar Room 1, Newton Institute
Abstract
In a series of seminal paprs, Aluffi and Faber computed the degree of the PGL -orbit closure of plane curves, extending the work of Enriques and Fano on PGL -orbit closures of points on a line. I will describe joint work with Anand Patel and Dennis Tseng that recasts these, and similar problems, using equivariant cohomology. As an application, I will obtain that the PGL -orbit closure of a general cubic surface has degree 96120.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Anand Deopurkar (Australian National University)
Thursday 25 January 2024, 11:45-12:45