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We prove a number of unconditional statistical results of the Hecke coefficients for unitary cuspidal representations of $\operatorname{GL}(2)$ over number fields. Using partial bounds on the size of the Hecke coefficients, instances of…

Number Theory · Mathematics 2026-05-15 Liubomir Chiriac , Andrei Jorza

We address two fundamental questions in the representation theory of affine Hecke algebras of classical types. One is an inductive algorithm to compute characters of tempered modules, and the other is the determination of the constants in…

Representation Theory · Mathematics 2013-11-12 Dan Ciubotaru , Midori Kato , Syu Kato

In this work, we set up a theory of p-adic modular forms over Shimura curves over totally real fields which allows us to consider also non-integral weights. In particular, we define an analogue of the sheaves of k-th invariant differentials…

Number Theory · Mathematics 2019-02-20 Riccardo Brasca

We find experimental examples of congruences of Hecke eigenvalues between automorphic representations of groups such as $\mathrm{GSp}_2(\mathbb{A})$, $\mathrm{SO}(4,3)(\mathbb{\mathbb{A}})$ and $\mathrm{SO}(5,4)(\mathbb{A})$, where the…

Number Theory · Mathematics 2020-03-20 Jonas Bergström , Neil Dummigan , David Farmer , Sally Koutsoliotas

We study the behaviour of automorphic L-Invariants associated to cuspidal representations of GL(2) of cohomological weight 0 under abelian base change and Jacquet-Langlands lifts to totally definite quaternion algebras. Under a standard…

Number Theory · Mathematics 2021-05-31 Lennart Gehrmann

Although links between values of finite field hypergeometric functions and eigenvalues of elliptic modular forms are well known, we establish in this paper that there are also connections to eigenvalues of Siegel modular forms of higher…

Number Theory · Mathematics 2016-05-12 Dermot McCarthy , Matthew A. Papanikolas

Warped convolutions of operators were recently introduced in the algebraic framework of quantum physics as a new constructive tool. It is shown here that these convolutions provide isometric representations of Rieffel's strict deformations…

Mathematical Physics · Physics 2011-04-22 Detlev Buchholz , Gandalf Lechner , Stephen J. Summers

We establish several refined strong multiplicity one results for paramodular cusp forms by using automorphic and Galois-theoretic methods. We also give an application to distinguishing eigenforms by the twisted central values of the spinor…

Number Theory · Mathematics 2026-04-29 Xiyuan Wang , Zhining Wei , Pan Yan , Shaoyun Yi

The aim of this paper is to propose an unambiguous intrinsic formalism for higher-order field theories which avoids the arbitrariness in the generalization of the conventional description of field theories, which implies the existence of…

Differential Geometry · Mathematics 2010-02-05 Cedric M. Campos , Manuel de Leon , David Martin de Diego , Joris Vankerschaver

We give a new expression for the inner product of two kernel functions associated to a cusp form. Among other applications, it yields an extension of a formula of Kohnen and Zagier, and another proof of Manin's Periods Theorem. Cohen's…

Number Theory · Mathematics 2009-08-18 Nikolaos Diamantis , Cormac O'Sullivan

We show that the action of Hecke operators away from $p$ on the space of ($p$-adic) overconvergent modular forms is ($p$-adically) locally analytic in a certain sense. As a corollary, the action of the Hecke algebra can be extended…

Number Theory · Mathematics 2026-03-31 Lue Pan

Modular forms appear in many facets of mathematics, and have played important roles in geometry, mathematical physics, number theory, representation theory, topology, and other areas. Around 1994, motivated by technical issues in homotopy…

Algebraic Topology · Mathematics 2007-05-23 Michael J. Hopkins

It is proved that certain types of modular cusp forms generate irreducible automorphic representation of the underlying algebraic group. Analogous archimedean and non-archimedean local statements are also given.

Representation Theory · Mathematics 2011-05-27 Hiro-aki Narita , Ameya Pitale , Ralf Schmidt

We define new higher-order Alexander modules $\mathcal{A}_n(C)$ and higher-order degrees $\delta_n(C)$ which are invariants of the algebraic planar curve $C$. These come from analyzing the module structure of the homology of certain…

Algebraic Topology · Mathematics 2012-04-03 Constance Leidy , Laurentiu Maxim

We show that a certain subspace of space of elliptic cusp forms is isomorphic as a Hecke module to a certain subspace of space of Jacobi cusp forms of degree one with matrix index by constructing an explicit lifting. This is a partial…

Number Theory · Mathematics 2008-08-10 Shunsuke Yamana

The sup-norm problem in analytic number theory asks for the largest value taken by a given automorphic form. We observe that the function-field version of this problem can be reduced to the geometric problem of finding the largest dimension…

Number Theory · Mathematics 2020-10-28 Will Sawin

We review some recent advances in modular representation theory of symmetric groups and related Hecke algebras. We discuss connections with Khovanov-Lauda-Rouquier algebras and gradings on the blocks of the group algebras $F\Sigma_n$, which…

Representation Theory · Mathematics 2014-05-15 Alexander Kleshchev

In this paper, we study the Drinfeld cusp forms for $\Gamma_1(T)$ and $\Gamma(T)$ using Teitelbaum's interpretation as harmonic cocycles. We obtain explicit eigenvalues of Hecke operators associated to degree one prime ideals acting on the…

Number Theory · Mathematics 2008-04-16 Wen-Ching Winnie Li , Yotsanan Meemark

We show that the large affine Hecke category defines an oriented, fully extended topological field theory. More generally, we establish conditions under which ind-coherent convolution categories define such theories, analogously to known…

Representation Theory · Mathematics 2026-04-02 Yuji Okitani

Given a cuspidal Hilbert modular eigenform $\pi$ of parallel weight 2 and a nonarchimedian place $\mathfrak p$ of the underlying totally real field such that the local component of $\pi$ at $\mathfrak p$ is the Steinberg representation, one…

Number Theory · Mathematics 2020-05-26 Michael Spiess