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20152026
most citedSimple supercuspidal L-packets of quasi-split classical groups

4 citations · 18 across the 17 of their papers we have counts for

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17 papers

math.RT2026

Twisted endoscopic character relation for toral supercuspidal L-packets of classical groups

Masao Oi

We prove that Kaletha's toral supercuspidal L-packets satisfy the twisted endoscopic character relation in some cases, including the case of general linear groups equipped with an…

math.RT2025

Twisted character formula for toral supercuspidal representations

Masao Oi

We establish an explicit formula for twisted Harish-Chandra characters of toral supercuspidal representations of p-adic reductive groups under several technical assumptions. Our se…

math.NT2023

On Swan exponents of symmetric and exterior square Galois representations

Guy Henniart, Masao Oi

Let be a local non-Archimedean field and a finite Galois extension of , with Galois group . If is a representation of on a complex vector space , we may co…

math.NT2023★ 3 cited

Simple supercuspidal L-packets of split special orthogonal groups over dyadic fields

Moshe Adrian, Guy Henniart, Eyal Kaplan +1

We consider the split special orthogonal group defined over a -adic field. We determine the structure of any -packet of containing a simpl…

math.RT2023★ 1 cited

Characterization of supercuspidal representations and very regular elements

Charlotte Chan, Masao Oi

We prove that regular supercuspidal representations of -adic groups are uniquely determined by their character values on very regular elements -- a special class of regular semi…

math.NT2022

The B(G)-parametrization of the local Langlands correspondence

Alexander Bertoloni Meli, Masao Oi

This article is on the parametrization of the local Langlands correspondence over local fields for non-quasi-split groups according to the philosophy of Vogan. We show that a param…

math.NT2022★ 3 cited

Simple supercuspidal L-packets of symplectic groups over dyadic fields

Guy Henniart, Masao Oi

We consider the symplectic group defined over a -adic field , where . We prove that every simple supercuspidal representation (in the sense of Gross--…

math.NT2022

Local newforms for generic representations of unramified odd unitary groups and Fundamental Lemma

Hiraku Atobe, Masao Oi, Seidai Yasuda

In this paper, we establish the theory of local newforms for irreducible tempered generic representations of unramified odd unitary groups over a non-archimedean local field. For t…

math.RT2021★ 2 cited

Geometric L-packets of Howe-unramified toral supercuspidal representations

Charlotte Chan, Masao Oi

We show that -packets of toral supercuspidal representations arising from unramified maximal tori of -adic groups are realized by Deligne--Lusztig varieties for parahoric sub…

math.NT2019★ 1 cited

Local Langlands correspondence for regular supercuspidal representations of GL(n)

Masao Oi, Kazuki Tokimoto

In this paper, we prove the coincidence of Kaletha's recent construction of the local Langlands correspondence for regular supercuspidal representations with Harris--Taylor's one i…

math.NT2019

Iwahori-Hecke algebra and unramified local L-functions

Masao Oi, Ryotaro Sakamoto, Hiroyoshi Tamori

In this paper, we compute the Hecke action of a certain test function on the space of an unramified principal series of a connected reductive group over a non-archimedean local fie…

math.NT2018★ 1 cited

Depth preserving property of the local Langlands correspondence for non-quasi-split unitary groups

Masao Oi

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 unitar…

math.NT2018★ 4 cited

Simple supercuspidal L-packets of quasi-split classical groups

Masao Oi

In this paper, for quasi-split classical groups over p-adic fields, we determine the L-packets consisting of simple supercuspidal representations and their corresponding L-paramete…

math.NT2018★ 1 cited

Depth preserving property of the local Langlands correspondence for quasi-split classical groups in a large residual characteristic

Masao Oi

For a quasi-split classical group over a p-adic field with sufficiently large residual characteristic, we prove that the maximum of depth of representations in each L-packet equals…

math.NT2016★ 1 cited

Endoscopic lifting of simple supercuspidal representations of unramified U(N) to GL(N)

Masao Oi

Let U(N) be the quasi-split unitary group in N variables for a quadratic unramified extension of p-adic fields. We compute the characters of simple supercuspidal representations of…

math.NT2016★ 1 cited

Endoscopic lifting of simple supercuspidal representations of SO(2n+1) to GL(2n)

Masao Oi

We compute the characters of simple supercuspidal representations of twisted GL(2n) and standard SO(2n+1) over a p-adic field. Comparing them by the endoscopic character relation,…

math.NT2015

On ramifications of Artin-Schreier extensions of surfaces over algebraically closed fields of positive characteristic III

Masao Oi

For a smooth surface X over an algebraically closed field of positive characteristic, we consider the ramification of an Artin-Schreier extension of X. A ramification at a point of…