2 papers
math.AG2022
Fixed points under pinning-preserving automorphisms of reductive group schemes
Pramod N. Achar, João Lourenço, Timo Richarz +1
In this paper we determine the scheme-theoretic fixed points of pinned reductive group schemes acted upon by a group of pinning-preserving automorphisms. The results are used in a…
math.AG2018
On the normality of Schubert varieties: remaining cases in positive characteristic
Thomas J. Haines, João Lourenço, Timo Richarz
We study the geometry of equicharacteristic partial affine flag varieties associated to tamely ramified groups in characteristics dividing the order of the fundamental gr…