Regular irreducible represntations of classical groups over finite quotient rings
Abstract
A parametrization of irreducible representations associated with a regular adjoint orbit of a classical group over finite quotient rings of the ring of integer of a non-dyadic non-archimedean local field is presented. The parametrization is given by means of (a subset of) the character group of the centralizer of a representative of the regular adjoint orbit. Our method is based upon Weil representations over finite fields. More explicit parametrization in terms of tamely ramified extensions of the base field is given for the general linear group, the special linear group, the symplectic group and the orthogonal group.
Keywords
Cite
@article{arxiv.1905.02542,
title = {Regular irreducible represntations of classical groups over finite quotient rings},
author = {Koichi Takase},
journal= {arXiv preprint arXiv:1905.02542},
year = {2020}
}
Comments
submitted to Pacific Journal of Mathematics. arXiv admin note: substantial text overlap with arXiv:1701.06127, arXiv:1509.07573