38 citations · 51 across the 13 of their papers we have counts for
16 papers
Endoscopy on -eigenvarieties
Christian Johansson, Judith Ludwig
In this paper, we study p-adic endoscopy on eigenvarieties for over totally real fields, taking a geometric perspective. We show that non-automorphic members of end…
Perfectoid Shimura varieties and the Calegari-Emerton conjectures
David Hansen, Christian Johansson
We prove many new cases of a conjecture of Calegari-Emerton describing the qualitative properties of completed cohomology. The heart of our argument is a careful inductive analysis…
Vanishing theorems for Shimura varieties at unipotent level
Ana Caraiani, Daniel R. Gulotta, Christian Johansson
We show that the compactly supported cohomology of Shimura varieties of Hodge type of infinite -level (defined with respect to a Borel subgroup) vanishes above the m…
On subquotients of the etale cohomology of Shimura varieties
Christian Johansson, Jack A. Thorne
We study the conditions imposed by conjectures of Arthur and Kottwitz on the Galois representations occurring in the cohomology of Shimura varieties.
A quotient of the Lubin-Tate tower II
Christian Johansson, Judith Ludwig, David Hansen
In this article we construct the quotient M_1/P(K) of the infinite-level Lubin-Tate space M_1 by the parabolic subgroup P(K) of GL(n,K) of block form (n-1,1) as a perfectoid space,…
Shimura varieties at level and Galois representations
Ana Caraiani, Daniel R. Gulotta, Chi-Yun Hsu +4
We show that the compactly supported cohomology of certain or -Shimura varieties with -level vanishes above the middle degree. The…