English

$\epsilon$-isomorphisms for rank one $(\varphi,\Gamma)$-modules over Lubin-Tate Robba rings

Number Theory 2025-04-16 v2

Abstract

Inspired by Nakamura's work (arXiv:1305.0880) on ϵ\epsilon-isomorphisms for (φ,Γ)(\varphi,\Gamma)-modules over (relative) Robba rings with respect to the cyclotomic theory, we formulate an analogous conjecture for LL-analytic Lubin-Tate (φL,ΓL)(\varphi_L,\Gamma_L)-modules over (relative) Robba rings for any finite extension LL of Qp.\mathbb{Q}_p. In contrast to Kato's and Nakamura's setting, our conjecture involves LL-analytic cohomology instead of continuous cohomology within the generalized Herr complex. Similarly, we restrict to the identity components of DcrisD_{cris} and DdR,D_{dR}, respectively. For rank one modules of the above type or slightly more generally for trianguline ones, we construct ϵ\epsilon-isomorphisms for their Lubin-Tate deformations satisfying the desired interpolation property.

Keywords

Cite

@article{arxiv.2404.09974,
  title  = {$\epsilon$-isomorphisms for rank one $(\varphi,\Gamma)$-modules over Lubin-Tate Robba rings},
  author = {Milan Malcic and Rustam Steingart and Otmar Venjakob and Max Witzelsperger},
  journal= {arXiv preprint arXiv:2404.09974},
  year   = {2025}
}

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