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Related papers: Note on the non-preservation of depth

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We show that for a wildly ramified torus, depth is not preserved in general under local Langlands correspondence for tori.

Representation Theory · Mathematics 2021-06-18 Manish Mishra , Basudev Pattanayak

Let $K$ be a non-archimedean local field. In the local Langlands correspondence for tori over $K$, we prove an asymptotic result for the depths.

Representation Theory · Mathematics 2018-10-19 Anne-Marie Aubert , Roger Plymen

Let G be an inner form of a general linear group over a non-archimedean local field. We prove that the local Langlands correspondence for G preserves depths. We also show that the local Langlands correspondence for inner forms of special…

Representation Theory · Mathematics 2016-12-09 Paul Baum , Anne-Marie Aubert , Roger Plymen , Maarten Solleveld

We introduce a revised notion of depth for Langlands parameters for tori defined over a nonarchimedean local field \(F\) that restores depth preservation under the local Langlands correspondence (LLC). We leverage that preservation to…

Representation Theory · Mathematics 2026-01-30 Manish Mishra

We show new properties of the Langlands correspondence for arbitrary tori over local fields. Furthermore, we give a detailed analysis of depth-zero characters of reductive p-adic groups, for groups that may be wildly ramified. We present…

Number Theory · Mathematics 2025-02-04 Maarten Solleveld , Yujie Xu

It is expected that, under mild conditions, local Langlands correspondence preserves depths of representations. In this article, we formulate a conjectural geometrisation of this expectation. We prove half of this conjecture by showing that…

Representation Theory · Mathematics 2014-04-03 Tsao-Hsien Chen , Masoud Kamgarpour

Smooth irreducible representations of tori over local fields have been parameterized by Langlands, using class field theory and Galois cohomology. This paper extends this parameterization to central extensions of such tori, which arise…

Representation Theory · Mathematics 2008-03-13 Martin H. Weissman

In this paper, we extend our result on a depth preserving property of the local Langlands correspondence for quasi-split unitary groups (arXiv:1804.10901) to non-quasi-split unitary groups by using the local theta correspondence. The key…

Number Theory · Mathematics 2018-07-24 Masao Oi

We conjecture an explicit formula for the higher dimensional Dirichlet character; the formula is based on the K-theory of the so-called noncommutative tori. It is proved, that our conjecture is true for the two-dimensional and…

Operator Algebras · Mathematics 2011-08-23 Igor Nikolaev

We consider the group $SL_2(K)$, where $K$ is a local non-archimedean field of characteristic two. We prove that the depth of any irreducible representation of $SL_2 (K)$ is larger than the depth of the corresponding Langlands parameter,…

Representation Theory · Mathematics 2019-01-28 Anne-Marie Aubert , Sergio Mendes , Roger Plymen , Maarten Solleveld

Let G be a reductive p-adic group. We study how a local Langlands correspondence for irreducible tempered G-representations can be extended to a local Langlands correspondence for all irreducible smooth representations of G. We prove that,…

Representation Theory · Mathematics 2015-03-10 Anne-Marie Aubert , Paul Baum , Roger Plymen , Maarten Solleveld

We prove the local Langlands correspondence for GSp_4(F), where F is a non-archimedean local field of positive characteristic with residue characteristic > 2.

Number Theory · Mathematics 2014-10-27 Radhika Ganapathy

We give a purely local proof, in the depth 0 case, of the result by Harris-Taylor which asserts that the local Langlands correspondence for GL_n over a p-adic field K realizes itself inside the vanishing cycle cohomology of the deformation…

Number Theory · Mathematics 2010-05-20 Teruyoshi Yoshida

Let $F$ be a non-archimedean local field of odd residual characteristic $p$. The depth of a smooth representation of ${\rm GL}_n(F)$ is an invariant of Local Langlands Correspondence (LLC). The analogous notion on the Galois side of LLC is…

Representation Theory · Mathematics 2026-03-18 Arindam Jana , Amiya Mondal

This work is intended as an introduction to the statement and the construction of the local Langlands correspondence for GL(n) over p-adic fields. The emphasis lies on the statement and the explanation of the correspondence.

Algebraic Geometry · Mathematics 2007-05-23 T. Wedhorn

The local Langlands correspondence for GL(n) of a non-Archimedean local field $F$ parametrizes irreducible admissible representations of $GL(n,F)$ in terms of representations of the Weil-Deligne group $WD_F$ of $F$. The correspondence,…

Number Theory · Mathematics 2007-05-23 Michael Harris

Let $E/F$ be a finite and Galois extension of non-archimedean local fields. Let $G$ be a connected reductive group defined over $E$ and let $M: = \mathfrak{R}_{E/F}\, G$ be the reductive group over $F$ obtained by Weil restriction of…

Representation Theory · Mathematics 2020-07-03 Anne-Marie Aubert , Roger Plymen

We survey results related to our geometrization of a part of the $p$-adic local Langlands correspondence for ${\mathrm{GL}}_2({\mathbf Q}_p)$.

Number Theory · Mathematics 2025-04-09 Pierre Colmez , Gabriel Dospinescu , Wiesława Nizioł

We describe the image, under the local Langlands correspondence for tori, of the characters of a torus which are trivial on its Iwahori subgroup. Let $k$ be a non-archimedian local field. Let $\boldsymbol{G}$ be a connected reductive group…

Representation Theory · Mathematics 2013-10-29 Manish Mishra

We prove the Nonvanishing Theorem for threefolds over an algebraically closed field $k$ of characteristic $p >5$.

Algebraic Geometry · Mathematics 2019-05-29 Chenyang Xu , Lei Zhang
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