Local cohomology of modular invariant rings

Seminar
Date and Time
-
Location
MSB 110
Organizers
Speaker
Anurag Singh, University of Utah

Consider a finite subgroup of the general linear group, with its natural action on a polynomial ring.  We discuss how the local cohomology module of the invariant ring compares with the invariant part of the local cohomology of the polynomial ring.  This has various consequences, such as for the \(a\)-invariant and for the Hilbert series.  This is joint work with Kriti Goel and Jack Jeffries.