Abstract
We consider the Newton stratification on Iwahori double cosets for a connected reductive group. We prove the existence of Newton strata whose closures cannot be expressed as a union of strata, and show how this is implied by the existence of non-equidimensional affine Deligne–Lusztig varieties. We also give an explicit example for a group of type A4.
Original language | English |
---|---|
Pages (from-to) | 35-48 |
Number of pages | 14 |
Journal | Manuscripta Mathematica |
Volume | 170 |
Issue number | 1-2 |
DOIs | |
State | Published - Jan 2023 |