3 papers
math.AG2026
Orbits of subgroups of codimension one to four of the Iwahori group in the affine flag variety of
Claude Eicher
We describe how each finite dimensional Schubert cell in the affine flag variety of decomposes into orbits for a chain of subgroups of codimension one to four of the…
math.RT2025
On a Gelfand-Tsetlin representation of in the space of sections of a local system with two monodromy parameters
Claude Eicher
We construct a Gelfand-Tsetlin representation of in the space of sections of a local system. The local system lives on an open part of the flag variety given by t…
math.RT2024
Relaxed Highest Weight Modules from -Modules on the Kashiwara Flag Scheme
C. Eicher
The relaxed highest weight representations introduced by Feigin et al. are a class of representations of the affine Kac-Moody algebra , which do not have a h…