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20092026
most citedHecke algebras related to the unimodular and modular groups over hermitian fields and definite quaternion algebras

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math.NT2026

Theta Cycles of Modular Forms Modulo

Scott Ahlgren, Martin Raum, Olav K. Richter

The theta cycle of a modular form modulo a prime is well understood. By contrast, the theta cycle modulo a power of is still mysterious and experimentally erratic. He…

math.NT2025

Jacobi Forms of Affine Weight in Higher Cogenus and Nearly Holomorphic Functions

Jan Feldmann, Martin Raum

We describe Jacobi forms of vector-valued weights in terms of classical ones, extending previous results by Ibukiyama and Kyomura to the case of arbitrary cogenus. As in their resu…

math.NT2025

Correction to "Kudla's Modularity Conjecture and Formal Fourier-Jacobi Series"

Jan Hendrik Bruinier, Martin Raum

We correct an error in Lemma 4.4 and its application in Theorem 4.5 in our paper ``Kudla's Modularity Conjecture and Formal Fourier-Jacobi Series''.

math.NT2025

Eisenstein series modulo

Scott Ahlgren, Michael Hanson, Martin Raum +1

We study congruences for Eisenstein series on modulo , where is prime. It is classically known that all Eisenstein series of weight at l…

math.NT2022

The Bernstein-Gelfand Tensor Product Functor and the Weight-2 Eisenstein Series

Martin Raum

The Bernstein-Gelfand tensor product functors are endofunctors of the category of Harish-Chandra modules provided by tensor products with finite dimensional modules. We provide an…

math.NT2022

Eichler integrals and generalized second order Eisenstein series

Albin Ahlbäck, Tobias Magnusson, Martin Raum

We show that all Eichler integrals, and more generally all "generalized second order modular forms" can be expressed as linear combinations of corresponding generalized second orde…