Locally analytic vectors of some crystabelian representations of GL_2(Qp)

Details Locally analytic vectors of some crystabelian representations of GL_2(Qp) Locally analytic vectors of some crystabelian representations of GL_2(Qp)

2009-10-04

arxiv.org/abs/0910.0601v2

Mathematics

Number Theory

Refereed version. Title is changed. Minor changes in the content

Scientific paper

For V a 2-dimensional p-adic representation of G_Qp, we denote by B(V) the admissible unitary representation of GL_2(Qp) attached to V under the p-adic local Langlands correspondence of GL_2(Qp) initiated by Breuil. In this article, building on the works of Berger-Breuil and Colmez, we determine the locally analytic vectors B(V)an of B(V) when V is irreducible, crystabelian and Frobenius semi-simple with Hodge-Tate weights (0,k-1) for some integer k>=2; this proves a conjecture of Breuil. Using this result, we verify Emerton's conjecture that dim Ref^{\eta\otimes\psi}(V)=dim Exp^{\eta|\cdot|\otimes x\psi}(B(V)an\otimes(x|\cdot|\circ\det)) for those V which are irreducible, crystabelian and not exceptional.

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