84 citations · 357 across the 24 of their papers we have counts for
4 papers · 1 filter
Ekedahl-Oort and Newton strata for Shimura varieties of PEL type
Eva Viehmann, Torsten Wedhorn
We study the Ekedahl-Oort stratification for good reductions of Shimura varieties of PEL type. These generalize the Ekedahl-Oort strata defined and studied by Oort for the moduli s…
Newton strata in the loop group of a reductive group
Eva Viehmann
We generalize purity of the Newton stratification to purity for a single break point of the Newton point in the context of local G-shtukas respectively of elements of the loop grou…
Generalized affine Springer fibers
Robert Kottwitz, Eva Viehmann
This paper studies two new kinds of affine Springer fibers that are adapted to the root valuation strata of Goresky-Kottwitz-MacPherson. In addition it develops various linear vers…
Foliations in deformation spaces of local G-shtukas
Urs Hartl, Eva Viehmann
We study local G-shtukas with level structure over a base scheme whose Newton polygons are constant on the base. We show that after a finite base change and after passing to an éta…