activity
20152021
collaborators

5 papers

math.RT2021

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

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.NT2018

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

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.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…