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We establish a Siegel-Weil formula for classical groups over a function field with odd characteristic, which asserts in many cases that the Siegel Eisenstein series is equal to an integral of a theta function. This is a function-field…

Number Theory · Mathematics 2020-01-22 Wei Xiong

By adapting the work of Kudla and Millson we obtain a lifting of cuspidal cohomology classes for the symmetric space associated to GO(V) for an indefinite rational quadratic space V of even dimension to holomorphic Siegel modular forms on…

Number Theory · Mathematics 2009-02-27 Tobias Berger

We investigate vertex operator algebras $L(k,0)$ associated with modular-invariant representations for an affine Lie algebra $A_1 ^{(1)}$ , where k is 'admissible' rational number. We show that VOA $L(k,0)$ is rational in the category $\cal…

q-alg · Mathematics 2008-02-03 Drazen Adamovic , Antun Milas

Let $\M$ be a semi-finite factor and let $\J(\M)$ be the set of operators $T$ in $\M$ such that $T=ETE$ for some finite projection $E$. In this paper we obtain a representation theorem for unitarily invariant norms on $\J(\M)$ in terms of…

Operator Algebras · Mathematics 2008-04-22 Junsheng Fang , Don Hadwin

We determine the action of the Hecke operators \(T_{\mathfrak{p},i}\) on the coefficient forms \(g_{1}, \dots, g_{r-1}, g_{r} = \Delta\), and \(h\), which together generate the ring of modular forms for \(\mathrm{GL}(r,…

Number Theory · Mathematics 2025-11-04 Ernst-Ulrich Gekeler

We study potentially crystalline deformation rings for a residual, ordinary Galois representation $\overline{\rho}: G_{\mathbb{Q}_p}\rightarrow \mathrm{GL}_3(\mathbb{F}_p)$. We consider deformations with Hodge-Tate weights $(0,1,2)$ and…

Number Theory · Mathematics 2016-03-22 Brandon Levin , Stefano Morra

A linear algebraic group $G$ is represented by the linear space of its algebraic functions $F(G)$ endowed with multiplication and comultiplication which turn it into a Hopf algebra. Supplying $G$ with a Poisson structure, we get a quantized…

Algebraic Geometry · Mathematics 2007-05-23 Yuri I. Manin

The conformal transformations with respect to the metric defining the orthogonal Lie algebra o(n) give rise to a one-parameter (c) family of inhomogeneous first-order differential operator representations of the orthogonal Lie algebra…

Representation Theory · Mathematics 2014-04-01 Xiaoping Xu

We study a family of non-C2-cofinite vertex operator algebras, called the singlet vertex operator algebras, and connect several important concepts in the theory of vertex operator algebras, quantum modular forms, and modular tensor…

Quantum Algebra · Mathematics 2024-12-05 Thomas Creutzig , Antun Milas , Simon Wood

We use the Jacobi theta function to give a representation of the modulus of the Riemann $\xi$ function. Based on this modulus representation, we show that the Riemann hypothesis is equivalent to the validity of a family of polynomial…

Number Theory · Mathematics 2024-11-07 Wei Sun

We study an analogue of Serre's modularity conjecture for projective representations $\overline{\rho}: \operatorname{Gal}(\overline{K} / K) \rightarrow \operatorname{PGL}_2(k)$, where $K$ is a totally real number field. We prove new cases…

Number Theory · Mathematics 2021-09-10 Patrick B. Allen , Chandrashekhar B. Khare , Jack A. Thorne

Let f be a Bianchi modular form, that is, an automorphic form for GL(2) over an imaginary quadratic field F. In this paper, we prove an exceptional zero conjecture in the case where f is new at a prime above p. More precisely, for each…

Number Theory · Mathematics 2020-07-23 Daniel Barrera Salazar , Chris Williams

In this paper, the well-known relationship between theta functions and Heisenberg group actions thereon is resumed by combining complex algebraic and noncommutative geometric techniques in that we describe Hermitian-Einstein vector bundles…

Quantum Algebra · Mathematics 2025-09-03 Maximiliano Sandoval , Mauro Spera

We extend the classical Fuglede commutativity theorem to the full scale of symmetrically normed operator ideals. Our main result provides a complete characterization: a symmetric ideal or symmetric operator space of $\tau$-measurable…

Functional Analysis · Mathematics 2025-12-17 Denis Potapov , Fedor Sukochev , Anna Tomskova , Dmitriy Zanin

This paper concerns certain $\mod p$ differential operators that act on automorphic forms over Shimura varieties of type A or C. We show that, over the ordinary locus, these operators agree with the $\mod p$ reduction of the $p$-adic theta…

Number Theory · Mathematics 2021-10-20 Ellen E. Eischen , Max Flander , Alexandru Ghitza , Elena Mantovan , Angus McAndrew

The conjecture of Serre referred in the title is the one about modularity of odd Galois representations into GL(2,F) where F is a finite field of characteristic p. We present an analogous conjecture where GL(2) is replaced by GL(n). We…

Number Theory · Mathematics 2007-05-23 Avner Ash , Warren Sinnott

In this paper we prove a Thomae derivative formula for trigonal curves admitting a non-singular affine model. This formula relates the derivatives of theta functions with rational characteristics on the curve to explicit expressions in the…

Algebraic Geometry · Mathematics 2020-08-14 Victor Enolski , Yaacov Kopeliovich , Shaul Zemel

Let $T$ be an absolutely continuous polynomially bounded operator, and let $\theta$ be a singular inner function. It is shown that if $\theta(T)$ is invertible and some additional conditions are fulfilled, then $T$ has nontrivial…

Functional Analysis · Mathematics 2019-12-17 Maria F. Gamal'

The conductor operator acts on a function through multiplying it with the logarithm of the norm of the variable both in position and in momentum space and adding the outcomes. It makes sense at each completion of an arbitrary number field…

Number Theory · Mathematics 2007-05-23 Jean-Francois Burnol

The goal of this paper is to remove the irreducibility hypothesis in a theorem of Richard Taylor describing the image of complex conjugations by $p$-adic Galois representations associated with regular, algebraic, essentially self-dual,…

Number Theory · Mathematics 2012-03-02 Olivier Taïbi