Results 1 to 10 of about 167,831,130 (242)

Fast computation of half-integral weight modular forms [PDF]

open access: yesRocky Mountain Journal of Mathematics, 2022
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 half-integral weight and level 4, which have the property that many coefficients can be computed (relatively ...
Inam, Ilker, Wiese, Gabor
openaire   +6 more sources

Periodicities for Taylor coefficients of half-integral weight modular forms [PDF]

open access: yesPacific Journal of Mathematics, 2020
Congruences of Fourier coefficients of modular forms have long been an object of central study. By comparison, the arithmetic of other expansions of modular forms, in particular Taylor expansions around points in the upper-half plane, has been much less studied. Recently, Romik made a conjecture about the periodicity of coefficients around $τ=i$ of the
Guerzhoy, P., Mertens, M., Rolen, L.
core   +10 more sources

Coefficients of half-integral weight modular forms [PDF]

open access: yesJournal of Number Theory, 2003
Inspired by Kolyvagin's celebrated work on the Birch and Swinnerton-Dyer Conjecture and works of Waldspurger, Kohnen and Zagier relating the Fourier coefficients of half-integral weight Hecke eigenforms to values of modular \(L\)-functions (there have been a number of works on the indivisibility of the coefficients of half-integral weight modular forms)
Bruinier, Jan H., Ono, Ken
openaire   +2 more sources

Period functions of half-integral weight modular forms [PDF]

open access: yesJournal de théorie des nombres de Bordeaux, 2015
In this paper, we study the Eichler cohomology associated with half-integral weight cusp forms using the Dedekind eta function η ( z )
Choi, Dohoon, Lim, Subong, Raji, Wissam
openaire   +4 more sources

Modular forms of half-integral weight on Γ0(4) with few nonvanishing coefficients modulo ℓ

open access: yesOpen Mathematics, 2022
Let kk be a nonnegative integer. Let KK be a number field and OK{{\mathcal{O}}}_{K} be the ring of integers of KK. Let ℓ≥5\ell \ge 5 be a prime and vv be a prime ideal of OK{{\mathcal{O}}}_{K} over ℓ\ell . Let ff be a modular form of weight k+12k+\frac{1}
Choi Dohoon, Lee Youngmin
doaj   +2 more sources

On “good” half-integral weight modular forms [PDF]

open access: yesMathematical Research Letters, 2000
The authors prove a result on the nonvanishing of Fourier coefficients of modular forms of half-integral weight. Recently, there have been quite a few papers in this field by, among others, \textit{J. Bruinier} [Abh. Math. Sem. Univ. Hamb. 68, 163--168 (1998; Zbl 0954.11016)] and \textit{K. Ono} [C. R. Math. Acad. Sci., Soc. R. Can. 20, 103--107 (1998;
Jiménez-Urroz, Jorge, Ono, Ken
openaire   +1 more source

Bounds for twisted symmetric square L-functions via half-integral weight periods

open access: yesForum of Mathematics, Sigma, 2020
We establish the first moment bound $$\begin{align*}\sum_{\varphi} L(\varphi \otimes \varphi \otimes \Psi, \tfrac{1}{2}) \ll_\varepsilon p^{5/4+\varepsilon} \end{align*}$$ for triple product L-functions, where $\Psi $ is a fixed Hecke ...
Paul D. Nelson
doaj   +1 more source

SIGN OF FOURIER COEFFICIENTS OF MODULAR FORMS OF HALF‐INTEGRAL WEIGHT [PDF]

open access: yesMathematika, 2016
We establish lower bounds for (i) the numbers of positive and negative terms and (ii) the number of sign changes in the sequence of Fourier coefficients at squarefree integers of a half-integral weight modular Hecke eigenform.
Lau, Yuk-Kam, Royer, Emmanuel, Wu, Jie
openaire   +5 more sources

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