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Related papers: A database of Hilbert modular forms

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Let $F$ be a totally real number field and $\mathfrak{o}$ the ring of integers of $F$. We study theta functions which are Hilbert modular forms of half-integral weight for the Hilbert modular group $\mathrm{SL}_2(\mathfrak{o})$. We obtain…

Number Theory · Mathematics 2021-02-23 Hiroshi Noguchi

The two reference lists contain 54/22 references of papers and preprints concerned with the theory and/or various applications of Hilbert modules over Hilbert $*$-algebras and over (non-self-adjoint) operator algebras. They are far from…

funct-an · Mathematics 2008-02-03 Michael Frank

We provide a clarification of the classification of two-dimensional algebras over an arbitrary base field. Using this clarification, we determine the number of non-isomorphic two-dimensional algebras over a finite field.

Rings and Algebras · Mathematics 2026-05-26 U. Bekbaev

To study statistical properties of modular forms, including for instance Sato-Tate like problems, it is essential to have a large number of Fourier coefficients. In this article, we exhibit three bases for the space of modular forms of any…

Number Theory · Mathematics 2023-01-23 Ilker Inam , Gabor Wiese

We study vector-valued Siegel modular forms of genus 2 and level 2. We describe the structure of certain modules of vector-valued modular forms over rings of scalar-valued modular forms.

Algebraic Geometry · Mathematics 2015-02-16 Fabien Cléry , Gerard van der Geer , Samuel Grushevsky

We present a formula for vector-valued modular forms, expressing the value of the Hilbert-polynomial of the module of holomorphic forms evaluated at specific arguments in terms of traces of representation matrices, restricting the weight…

Number Theory · Mathematics 2012-11-27 P. Bantay

This paper is a detailed study of finite-dimensional modules defined on bicomplex numbers. A number of results are proved on bicomplex square matrices, linear operators, orthogonal bases, self-adjoint operators and Hilbert spaces, including…

Functional Analysis · Mathematics 2011-08-10 Raphael Gervais Lavoie , Louis Marchildon , Dominic Rochon

Using half-integral weight modular forms we give a criterion for the existence of real quadratic $p$-rational fields. For $p=5$ we prove the existence of infinitely many real quadratic $p$-rational fields.

Number Theory · Mathematics 2019-06-11 Jilali Assim , Zakariae Bouazzaoui

In this paper, congruences between holomorphic Hilbert modular forms are studied. We show the best possible level optimization result outside l for l > 2 by solving the remaining case of Mazur principle when the degree of the totally real…

Number Theory · Mathematics 2007-05-23 K. Fujiwara

For each subset of primes in a totally real field above a rational prime $p$, there is the notion of partially classical Hilbert modular forms, where the empty set recovers the overconvergent forms and the full set of primes above $p$…

Number Theory · Mathematics 2025-09-17 Mladen Dimitrov , Chi-Yun Hsu

We prove a companion forms theorem for mod l Hilbert modular forms. This work generalises results of Gross and Coleman--Voloch for modular forms over Q, and gives a new proof of their results in many cases. The methods used are completely…

Number Theory · Mathematics 2010-09-07 Toby Gee

In this paper, we give a method to construct a classical modular form from a Hilbert modular form. By applying this method, we can get linear formulas which relate the Fourier coefficients of the Hilbert and classical modular forms. The…

Number Theory · Mathematics 2017-11-02 Ren-He Su

We prove that amongst all real quadratic fields and all spaces of Hilbert modular forms of full level and of weight $2$ or greater, the product of two Hecke eigenforms is not a Hecke eigenform except for finitely many real quadratic fields…

Number Theory · Mathematics 2020-12-07 Kirti Joshi , Yichao Zhang

Transformer models have continuously expanded into all machine learning domains convertible to the underlying sequence-to-sequence representation, including tabular data. However, while ubiquitous, this representation restricts their…

Machine Learning · Computer Science 2025-07-24 Jakub Peleška , Gustav Šír

This is an invited contribution to the 2nd edition of the Encyclopedia of Mathematical Physics. We review the following algebraic structures which appear in two-dimensional conformal field theory (CFT): The symmetries of two-dimensional…

Quantum Algebra · Mathematics 2024-12-05 Jürgen Fuchs , Christoph Schweigert , Simon Wood , Yang Yang

We study the possible weights of an irreducible 2-dimensional modular mod p representation of the absolute Galois group of F, where F is a totally real field which is totally ramified at p, and the representation is tamely ramified at the…

Number Theory · Mathematics 2010-09-16 Toby Gee , David Savitt

Using the framework relating hypergeometric motives to modular forms, we define an explicit family of weight 2 Hecke eigenforms with complex multiplication. We use the theory of ${}_2F_1(1)$ hypergeometric series and Ramanujan's theory of…

Number Theory · Mathematics 2025-02-14 Esme Rosen

Several new properties of weighted Hilbert transform are obtained. If mu is zero, two Plancherel-like equations and the isotropic properties are derived. For mu is real number, a coerciveness is derived and two iterative sequences are…

Machine Learning · Computer Science 2020-02-12 Jason You

We describe an implementation for computing holomorphic and skew-holomorphic Jacobi forms of integral weight and scalar index on the full modular group. This implementation is based on formulas derived by one of the authors which express…

Number Theory · Mathematics 2019-02-20 Nathan C. Ryan , Nicolás Sirolli , Nils-Peter Skoruppa , Gonzalo Tornaría

This is a book about computational aspects of modular forms and the Galois representations attached to them. The main result is the following: Galois representations over finite fields attached to modular forms of level one can, in almost…

Number Theory · Mathematics 2010-03-23 Bas Edixhoven , Jean-Marc Couveignes , Robin de Jong , Franz Merkl , Johan Bosman