activity
20172026
most citedA Hecke Algebra on the Double Cover of a Chevalley Group Over

1 citations · 1 across the 9 of their papers we have counts for

collaborators

10 papers

math.RT2026

Pseudo-spherical representations and types for covers of split tori

Edmund Karasiewicz, Shuichiro Takeda

We introduce a notion of pseudo-spherical representations for any Brylinski-Deligne (BD) cover of a split torus over a -adic field. In particular, we do not assume that the cove…

math.RT2025

Minimal depth -types for wild double covers and Shimura correspondences

Edmund Karasiewicz, Shuichiro Takeda

We construct some Iwahori types, in the sense of Bushnell-Kutzko, for the double cover of an almost simple simply-laced simply-connected Chevalley group over any $2…

math.RT2024

The stable wave front set of theta representations

Edmund Karasiewicz, Emile Okada, Runze Wang

We compute the stable wave front set of theta representations for certain tame Brylinski-Deligne covers of a connected reductive -adic group. The computation involves two main i…

math.RT2023

The Dual Pair (-adic case)

Edmund Karasiewicz, Gordan Savin

We study the local theta correspondence for dual pairs of the form over a -adic field, where is a composition algebra of dimension 2 or 4, by r…

math.NT2022

Gelfand--Graev functor and quantum affine Schur--Weyl duality

Fan Gao, Nadya Gurevich, Edmund Karasiewicz

We explicate relations among the Gelfand--Graev modules for central covers, the Euler--Poincaré polynomial of the Arnold--Brieskorn manifold, and the quantum affine Schur--Weyl dua…

math.RT2022

Genuine pro- Iwahori--Hecke algebras, Gelfand--Graev representations, and some applications

Fan Gao, Nadya Gurevich, Edmund Karasiewicz

We study the Iwahori-component of the Gelfand-Graev representation of a central cover of a split linear reductive group and utilize our results for three applications. In fact, it…

math.RT2020

The Twisted Satake Transform and the Casselman-Shalika Formula for Quasi-Split Groups

Nadya Gurevich, Edmund Karasiewicz

We prove the Casselman-Shalika formula for unramified groups over a non-archimedean local field by studying the action of the spherical Hecke algebra on the space of compact spheri…

math.NT2020★ 1 cited

A Hecke Algebra on the Double Cover of a Chevalley Group Over

Edmund Karasiewicz

We prove that a certain genuine Hecke algebra on the non-linear double cover of a simple, simply-laced, simply-connected, Chevalley group over ad…

math.NT2018

The Fourier Coefficients of a Metaplectic Eisenstein Distribution on the Double Cover of SL over

Edmund Karasiewicz

We compute the Fourier coefficients of a minimal parabolic Eisenstein distribution on the double cover of SL over . Two key aspects of the paper are an explicit fo…

math.NT2017

A Splitting into the Double Cover of SL(3,)

Edmund Karasiewicz

We provide a formula for the splitting of a congruence subgroup of SL into the double cover of SL in terms of Plücker coordinates and prove that the…