Results 31 to 40 of about 353 (48)

Weakly holomorphic modular forms in prime power levels of genus zero

open access: yes, 2017
Let $M_k^\sharp(N)$ be the space of weight $k$, level $N$ weakly holomorphic modular forms with poles only at the cusp at $\infty$. We explicitly construct a canonical basis for $M_k^\sharp(N)$ for $N\in\{8,9,16,25\}$, and show that many of the Fourier ...
Da Silva, Caroline M.   +3 more
core   +1 more source

Taylor coefficients of non-holomorphic Jacobi forms and applications

open access: yes, 2017
In this paper, we prove modularity results of Taylor coefficients of certain non-holomorphic Jacobi forms. It is well-known that Taylor coefficients of holomorphic Jacobi forms are quasimoular forms.
Bringmann, Kathrin
core   +1 more source

On a completed generating function of locally harmonic Maass forms

open access: yes, 2014
While investigating the Doi-Naganuma lift, Zagier defined integral weight cusp forms $f_D$ which are naturally defined in terms of binary quadratic forms of discriminant $D$.
Ben Kane   +8 more
core   +1 more source

On Shimura's decomposition

open access: yes, 2013
Let $k$ be an odd integer $\ge 3$ and $N$ a positive integer such that $4 \mid N$. Let $\chi$ be an even Dirichlet character modulo $N$. Shimura decomposes the space of half-integral weight cusp forms $S_{k/2}(N,\chi)$ as a direct sum of $S_0(N,\chi ...
Kohnen W.   +3 more
core   +1 more source

An explicit Waldspurger formula for Hilbert modular forms

open access: yes, 2018
We describe a construction of preimages for the Shimura map on Hilbert modular forms, and give an explicit Waldspurger type formula relating their Fourier coefficients to central values of twisted L-functions.
Sirolli, Nicolás, Tornaría, Gonzalo
core   +1 more source

Sign changes of coefficients of half integral weight modular forms

open access: yes, 2007
For a half integral weight modular form $f$ we study the signs of the Fourier coefficients $a(n)$. If $f$ is a Hecke eigenform of level $ N$ with real Nebentypus character, and $t$ is a fixed square-free positive integer with $a(t)\neq 0$, we show that ...
Bruinier, Jan Hendrik, Kohnen, Winfried
core  

Higher Width Moonshine

open access: yes, 2019
\textit{Weak moonshine} for a finite group $G$ is the phenomenon where an infinite dimensional graded $G$-module $$V_G=\bigoplus_{n\gg-\infty}V_G(n)$$ has the property that its trace functions, known as McKay-Thompson series, are modular functions ...
Dawsey, Madeline Locus, Ono, Ken
core  

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