Year: 2026
Type: preprint
Abstract: We study Witt-vector affine Springer fibers for tame equi-valued conjugacy classes in tamely ramified groups. Following the approach of Goresky-Kottwitz-MacPherson in the equal characteristic setting, we show that they admit pavings by iterations of perfections of affine space bundles whose base are smooth Hessenberg varieties. Along the way we revisit a version of the Chevalley restriction theorem for the dual of Lie algebras.
Source: arXiv (Cornell University)
Author: Chi, Jingren
Language: English
Subfield: Algebra and Number Theory
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7166804651