Generic mod ℓ cohomology of non-compact unitary Shimura varieties is concentrated above the middle degree, and fibers of the compactified Hodge-Tate period map are compactified Igusa varieties.
Potential automorphy over CM fields
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abstract
Let $F$ be a CM number field. We prove modularity lifting theorems for regular $n$-dimensional Galois representations over $F$ without any self-duality condition. We deduce that all elliptic curves $E$ over $F$ are potentially modular, and furthermore satisfy the Sato--Tate conjecture. As an application of a different sort, we also prove the Ramanujan Conjecture for weight zero cuspidal automorphic representations for $\mathrm{GL}_2(\mathbf{A}_F)$.
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On the generic part of the cohomology of non-compact unitary Shimura varieties
Generic mod ℓ cohomology of non-compact unitary Shimura varieties is concentrated above the middle degree, and fibers of the compactified Hodge-Tate period map are compactified Igusa varieties.