1 citations · 2 across the 3 of their papers we have counts for
4 papers
Extremal cases of Rapoport-Zink spaces
Ulrich Görtz, Xuhua He, Michael Rapoport
We investigate qualitative properties of the underlying scheme of Rapoport-Zink formal moduli spaces of p-divisible groups, resp. Shtukas. We single out those cases when the dimens…
Alcove walks and nearby cycles on affine flag manifolds
Ulrich Goertz
Using Ram's theory of alcove walks, we give a proof of the Bernstein presentation of the affine Hecke algebra. The method works also in the case of unequal parameters. We also disc…
Bounds on weights of nearby cycles and Wakimoto sheaves on affine flag manifolds
Ulrich Goertz, Thomas J. Haines
We study certain nearby cycles sheaves on an affine flag manifold which arise naturally in the Beilinson-Gaitsgory deformation of the affine flag manifold to the affine Grassmannia…
Topological flatness of local models in the ramified case
Ulrich Goertz
Local models are schemes defined in terms of linear algebra which can be used to study the local structure of integral models of certain Shimura varieties, with parahoric level str…