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arXiv · 1805.08103

Induction and restriction of (\phi,\Gamma)-modules

Ehud de Shalit·Gal Porat
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Abstract

Let L be a non-archimedean local field of characteristic 0. We present a variant of the theory of (\phi,\Gamma)-modules associated with Lubin-Tate groups, developed by Kisin and Ren [Ki-Re], in which we replace the Lubin-Tate tower by the maximal abelian extension \Gamma = Gal(L^ab/L). This variation allows us to compute the functors of induction and restriction for (\phi,\Gamma)-modules, when the ground field L changes. We also give a self-contained account of the Cherbonnier-Colmez theorem on overconvergence in our setting.

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Ehud de Shalit, Gal Porat. 2018-05-21. Induction and restriction of (\phi,\Gamma)-modules. https://arxiv.org/abs/1805.08103

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