Results 21 to 30 of about 69,416 (237)

On the algebraicity of coefficients of half-integral weight mock modular forms

open access: yesOpen Mathematics, 2018
Extending works of Ono and Boylan to the half-integral weight case, we relate the algebraicity of Fourier coefficients of half-integral weight mock modular forms to the vanishing of Fourier coefficients of their shadows.
Choi SoYoung, Kim Chang Heon
doaj   +1 more source

𝐿-series and modular forms of half-integral weight [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
Let f be a normalized Hecke eigenform of weight 2k, with k odd. The main result of this paper is an equation representing the value of L ( f , s ) L ( f ⊗ ε , s ) L(f,s)L(f \otimes \varepsilon ,s) at s = k s =
openaire   +2 more sources

On the Fourier expansions of Jacobi forms of half-integral weight

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Using the relationship between Jacobi forms of half-integral weight and vector valued modular forms, we obtain the number of components which determine the given Jacobi form of index p, p2 or pq, where p and q are odd primes.
B. Ramakrishnan, Brundaban Sahu
doaj   +1 more source

On the Fourier expansions of Jacobi forms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We use the relationship between Jacobi forms and vector-valued modular forms to study the Fourier expansions of Jacobi forms of indexes p, p2, and pq for distinct odd primes p, q.
Howard Skogman
doaj   +1 more source

Diagonalising modular forms of half-integral weight

open access: yesJournal of Number Theory, 1992
The authors continue their study [J. Number Theory 34, 210-224 (1990; Zbl 0704.11013)] on cusp forms of half-integral weight on the groups \(\Gamma_ 0(4M)\) for odd squarefree \(M\). They introduce operators \(C(4)\) and \(C(p^ 2)\) for the primes \(p\mid M\) which are analogous to the operators \(C(p)\) for cusp forms of even weight introduced by ...
Manickam, M.   +2 more
openaire   +1 more source

Sign changes of fourier coefficients of modular forms of half integral weight, 2 [PDF]

open access: yes, 2016
In this paper, we investigate the sign changes of Fourier coefficients of half-integral weight Hecke eigenforms and give two quantitative results on the number of sign ...
Jiang, Yujiao   +4 more
core   +6 more sources

Generating weights for the Weil representation attached to an even order cyclic quadratic module [PDF]

open access: yes, 2017
We develop geometric methods to study the generating weights of free modules of vector valued modular forms of half-integral weight, taking values in a complex representation of the metaplectic group.
Candelori, Luca   +2 more
core   +3 more sources

Locally harmonic Maass forms and the kernel of the Shintani lift [PDF]

open access: yes, 2014
In this paper we define a new type of modular object and construct explicit examples of such functions. Our functions are closely related to cusp forms constructed by Zagier which played an important role in the construction by Kohnen and Zagier of a ...
Bringmann, Kathrin   +2 more
core   +3 more sources

Quantum Invariant, Modular Form, and Lattice Points [PDF]

open access: yes, 2004
We study the Witten--Reshetikhin--Turaev SU(2) invariant for the Seifert manifold with 4-singular fibers. We define the Eichler integrals of the modular forms with half-integral weight, and we show that the invariant is rewritten as a sum of the Eichler ...
Hikami, Kazuhiro
core   +1 more source

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