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In this paper we construct a class of new irreducible modules over untwisted affine Kac-Moody algebras $\widetilde{\mathfrak{g}}$, generalizing and including both highest weight modules and Whittaker modules. These modules allow us to…

Representation Theory · Mathematics 2015-12-23 Xiangqian Guo , Kaiming Zhao

We transfer Knapp-Stein $R$-groups for unitary weakly unramified characters between a $p$-adic quasi-split group and its non-quasi-split inner forms, and provide the structure of those $R$-groups for a general connected reductive group over…

Number Theory · Mathematics 2022-10-06 Kwangho Choiy

We calculate extensions between certain irreducible admissible representations of p-adic groups.

Representation Theory · Mathematics 2012-05-10 Jeffrey D. Adler , Dipendra Prasad

This paper establishes a combinatorial link between different approaches to constructing Whittaker functions on a metaplectic group over a non-archimedean local field. We prove a metaplectic analogue of Tokuyama's Theorem and give a crystal…

Number Theory · Mathematics 2016-05-19 Anna Puskás

We present a new framework for a broad class of affine Hecke algebra modules, and show that such modules arise in a number of settings involving representations of $p$-adic groups and $R$-matrices for quantum groups. Instances of such…

Representation Theory · Mathematics 2017-10-20 Ben Brubaker , Valentin Buciumas , Daniel Bump , Solomon Friedberg

We construct a graph complex calculating the integral ho- mology of the bordered mapping class groups. We compute the ho- mology of the bordered mapping class groups of various surfaces. Using the circle action on this graph complex, we…

Algebraic Topology · Mathematics 2011-11-10 Veronique Godin

The general construction of frames of p-adic wavelets is described. We consider the orbit of a mean zero generic locally constant function with compact support (mean zero test function) with respect to the action of the p-adic affine group…

Mathematical Physics · Physics 2011-05-10 S. Albeverio , S. V. Kozyrev

Starting with nonsymmetric global difference spherical functions, we define and calculate spinor (nonsymmetric) global q-Whittaker functions for arbitrary reduced root systems, which are reproducing kernels of the DAHA-Fourier transforms of…

Quantum Algebra · Mathematics 2013-04-23 Ivan Cherednik , Daniel Orr

We give noncommutative versions of the Redfield-P\'olya theorem in WSym, the algebra of word symmetric functions, and in other related combinatorial Hopf algebras.

Combinatorics · Mathematics 2013-02-26 Jean-Gabriel Luque , Ali Chouria , Jean-Paul Bultel , Olivier Mallet

We prove the equivalence of two conjectural constructions of unramified cuspidal automorphic functions on the adelic group GL_n(A) associated to an irreducible l-adic local system of rank n on an algebraic curve X over a finite field. The…

alg-geom · Mathematics 2016-08-30 E. Frenkel , D. Gaitsgory , D. Kazhdan , K. Vilonen

In this paper we compute new values of Iwahori Whittaker functions on $n$-fold metaplectic covers $\widetilde{G}$ of $\mathbf{G}(F)$ with $\mathbf{G}$ a split reductive group over a non-archimedean local field $F$. For every Iwahori…

Representation Theory · Mathematics 2024-02-29 Ben Brubaker , Valentin Buciumas , Daniel Bump , Henrik P. A. Gustafsson

This paper treats mathematically some problems in p-adic quantum mechanics. We first deal with p-adic symplectic group corresponding to the symmetry on the classical phase space. By the filtrations of isotropic subspaces and almost…

Mathematical Physics · Physics 2015-02-17 Zhi Hu , Sen Hu

In this paper, we define lower dimensional volumes associated to sub-Dirac operators for foliations. In some cases, we compute these lower dimensional volumes. We also prove the Kastler-Kalau-Walze type theorems for foliations with or…

Differential Geometry · Mathematics 2015-06-11 Jian Wang , Yong Wang

We introduce an infinite-dimensional $p$-adic affine group and construct its irreducible unitary representation. Our approach follows the one used by Vershik, Gelfand and Graev for the diffeomorphism group, but with modifications made…

Representation Theory · Mathematics 2020-05-08 Anatoly N. Kochubei , Yuri Kondratiev

We characterize $p-$harmonic functions in the Heisenberg group in terms of an asymptotic mean value property, where $1<p<\infty$, following the scheme described in Manfredi et al. (2009) for the Euclidean case. The new tool that allows us…

Analysis of PDEs · Mathematics 2012-10-11 Fausto Ferrari , Qing Liu , Juan J. Manfredi

We consider two disjoint and homotopic non-contractible embedded loops on a Riemann surface and prove the existence of a non-contractible orbit for a Hamiltonian function on the surface whenever it is sufficiently large on one of the loops…

Symplectic Geometry · Mathematics 2017-02-09 Hiroyuki Ishiguro

In this paper we establish a connection between the associated variety of a representation and the existence of certain degenerate Whittaker functionals, for both smooth and K-finite vectors, for all quasi-split real reductive groups,…

Representation Theory · Mathematics 2016-05-06 Dmitry Gourevitch , Siddhartha Sahi

Let $\Pi$ be a cuspidal automorphic representation of $\mathrm{GL}_{2n}(\mathbb{A_Q})$ and let $p$ be an odd prime at which $\Pi$ is unramified. In a recent work, Barrera, Dimitrov and Williams constructed possibly unbounded $p$-adic…

Number Theory · Mathematics 2022-10-04 Antonio Lei , Jishnu Ray

We consider a natural basis of the Iwahori fixed vectors in the Whittaker model of an unramified principal series representation of a split semisimple p- adic group, indexed by the Weyl group. We show that the elements of this basis may be…

Representation Theory · Mathematics 2011-11-21 Ben Brubaker , Daniel Bump , Anthony Licata

We show that Busemann functions on a smooth, non-compact, complete, boundaryless, connected Riemannian manifold are viscosity solutions with respect to the Hamilton-Jacobi equation determined by the Riemannian metric and consequently they…

Dynamical Systems · Mathematics 2013-12-24 Xiaojun Cui , Jian cheng