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In this paper we study the upper bound of wavefront sets of irreducible admissible representations of connected reductive groups defined over non-Archimedean local fields of characteristic zero. We formulate a new conjecture on the upper…

Representation Theory · Mathematics 2026-05-06 Alexander Hazeltine , Baiying Liu , Chi-Heng Lo , Freydoon Shahidi

Let $(\pi,X)$ be a depth-$0$ admissible smooth complex representation of a $p$-adic reductive group that splits over an unramified extension. In this paper we develop the theory necessary to study the wavefront set of $X$ over a maximal…

Representation Theory · Mathematics 2024-04-15 Emile Okada

In this paper, we start by defining a covering Barbasch-Vogan duality and prove some of its properties. Then, for genuine representations of $p$-adic covering groups we formulate an upper bound conjecture for their wavefront sets using this…

Representation Theory · Mathematics 2026-02-09 Fan Gao , Baiying Liu , Chi-Heng Lo , Freydoon Shahidi

In this paper we give the description of generic representations of metaplectic groups over p-adic fields in terms of their Langlands parameters and calculate their theta lifts on all levels for any tower of odd orthogonal groups. We also…

Representation Theory · Mathematics 2019-02-21 Petar Bakic , Marcela Hanzer

The wave-front set for an irreducible admissible representation of a $p$-adic reductive group is the set of maximal nilpotent orbits which appear in the local character expansion. By M\oe glin-Waldspurger, they are also the maximal…

Representation Theory · Mathematics 2025-10-22 Cheng-Chiang Tsai

This paper serves as an attempt towards the Jiang conjecture on the upper bound nilpotent orbits in the wavefront sets of representations in local Arthur packets of quasi-split classical groups, which is a natural generalization of the…

Representation Theory · Mathematics 2026-05-07 Baiying Liu , Freydoon Shahidi

We study the wave-front set of an element in a $p$-adic reductive Lie algebra (for $p\gg\operatorname{rank}$), namely the set of maximal nilpotent orbits appearing in its Shalika germ expansion. By adapting an algorithm of Waldspurger that…

Representation Theory · Mathematics 2023-11-15 Cheng-Chiang Tsai

For Iwahori-spherical genuine representations of central covers with positive real Satake parameters, we prove the upper bound inequality for their geometric wavefront sets, formulated for general genuine representations in an earlier work…

Representation Theory · Mathematics 2026-01-23 Fan Gao , Runze Wang

We compute the stable wave front set of theta representations for certain tame Brylinski-Deligne covers of a connected reductive $p$-adic group. The computation involves two main inputs. First we use a theorem of Okada, adapted to covering…

Representation Theory · Mathematics 2024-11-05 Edmund Karasiewicz , Emile Okada , Runze Wang

Theta series for exceptional groups have been suggested as a possible description of the eleven-dimensional quantum supermembrane. We present explicit formulae for these automorphic forms whenever the underlying Lie group $G$ is split (or…

High Energy Physics - Theory · Physics 2010-05-28 D. Kazhdan , B. Pioline , A. Waldron

We study wave-front sets of representations of reductive groups over global or non-archimedean local fields.

Number Theory · Mathematics 2015-02-06 Dihua Jiang , Baiying Liu , Gordan Savin

We use the theta lift to study the multiplicity with which certain automorphic representations of cohomological type occur in a family of congruence covers of an arithmetic manifold. When the family of covers is a so-called `p-adic…

Number Theory · Mathematics 2011-10-21 Mathieu Cossutta , Simon Marshall

Inspired by work surrounding Igusa's local zeta function, we introduce topological representation zeta functions of unipotent algebraic groups over number fields. These group-theoretic invariants capture common features of established…

Group Theory · Mathematics 2015-03-09 Tobias Rossmann

We study a new lifting of automorphic representations using the theta representation $\Theta$ on the $4$-fold cover of the symplectic group, $\overline{\mathrm{Sp}}_{2r}(\mathbb{A})$. This lifting produces the first examples of CAP…

Representation Theory · Mathematics 2019-04-22 Spencer Leslie

The wavefront set is a fundamental invariant of an admissible representation arising from the Harish-Chandra-Howe local character expansion. In this paper, we give a precise formula for the wavefront set of an irreducible representation of…

Representation Theory · Mathematics 2023-03-23 Dan Ciubotaru , Lucas Mason-Brown , Emile Okada

The wavefront set is a fundamental invariant arising from the Harish-Chandra-Howe local character expansion of an admissible representation. We prove a precise formula for the wavefront set of an irreducible Iwahori-spherical representation…

Representation Theory · Mathematics 2023-03-20 Dan Ciubotaru , Lucas Mason-Brown , Emile Okada

We formulate a conjectural p-adic analogue of Borel's theorem relating regulators for higher K-groups of number fields to special values of the corresponding zeta-functions, using syntomic regulators and p-adic L-functions. We also…

K-Theory and Homology · Mathematics 2007-11-19 Amnon Besser , Paul Buckingham , Rob de Jeu , Xavier-Francois Roblot

We study zeta functions enumerating finite-dimensional irreducible complex linear representations of compact p-adic analytic and of arithmetic groups. Using methods from p-adic integration, we show that the zeta functions associated to…

Group Theory · Mathematics 2010-04-09 Nir Avni , Benjamin Klopsch , Uri Onn , Christopher Voll

We verify the local analogue of Jiang's conjecture for the upper bound of the geometric wavefront sets of Arthur type representations of split classical $p$-adic groups with $p\gg 0$, under a certain condition. As a consequence, we also…

Representation Theory · Mathematics 2026-03-05 Hiraku Atobe , Dan Ciubotaru

Let $K[HK_{\Theta}]$ denote the Hecke-Kiselman algebra of a finite oriented graph $\Theta$ over an algebraically closed field $K$. All irreducible representations, and the corresponding maximal ideals of $K[HK_{\Theta}]$, are characterized…

Representation Theory · Mathematics 2021-04-16 Magdalena Wiertel
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