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20162023
most citedOn a theta lift related to the Shintani lift

20 citations · 32 across the 7 of their papers we have counts for

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math.NT2023

On Jacobi--Weierstrass mock modular forms

Claudia Alfes-Neumann, Jens Funke, Michael Mertens +1

We construct harmonic weak Maass forms that map to cusp forms of weight with rational coefficients under the -operator. This generalizes work of the first author, Grif…

math.NT2022

A classification of harmonic weak Maaß forms of half-integral weight

Claudia Alfes-Neumann, Martin Raum

We classify Harish-Chandra modules generated by the pullback to the metaplectic group of harmonic weak Maaß forms with exponential growth allowed at the cusps. This extends work by…

math.NT2020

Cycle integrals of meromorphic modular forms and coefficients of harmonic Maass forms

Claudia Alfes-Neumann, Kathrin Bringmann, Joshua Males +1

In this paper, we investigate traces of cycle integrals of certain meromorphic modular forms. By relating them to regularised theta lifts we provide explicit formulae for them in t…

math.NT2019★ 1 cited

Traces of reciprocal singular moduli

Claudia Alfes-Neumann, Markus Schwagenscheidt

We show that the generating series of traces of reciprocal singular moduli is a mixed mock modular form of weight whose shadow is given by a linear combination of products of…

math.NT2018★ 4 cited

Identities of Cycle Integrals of Weak Maass Forms

Claudia Alfes-Neumann, Markus Schwagenscheidt

We prove identities between cycle integrals of non-holomorphic modular forms arising from applications of various differential operators to weak Maass forms.

math.NT2018★ 7 cited

On the rationality of cycle integrals of meromorphic modular forms

Claudia Alfes-Neumann, Kathrin Bringmann, Markus Schwagenscheidt

We derive finite rational formulas for the traces of cycle integrals of certain meromorphic modular forms. Moreover, we prove the modularity of a completion of the generating funct…

math.NT2017

Shintani theta lifts of harmonic Maass forms

Claudia Alfes-Neumann, Markus Schwagenscheidt

We define a regularized Shintani theta lift which maps weight () harmonic Maass forms for congruence subgroups to (sesqui-)harmonic Maass forms of weight…

math.NT2016★ 20 cited

On a theta lift related to the Shintani lift

Claudia Alfes-Neumann, Markus Schwagenscheidt

We study a certain theta lift which maps weight to weight harmonic weak Maass forms for , and which is closely related to the classical Sh…