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

open access: goldOpen 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 the algebraicity of coefficients of half-integral weight mock modular forms

open access: goldOpen 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   +2 more sources

Fast computation of half-integral weight modular forms

open access: greenRocky Mountain Journal of Mathematics, 2020
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 ...
İlker İnam, Gabor Wiese
openalex   +6 more sources

Arithmetic of half integral weight theta-series [PDF]

open access: bronzeActa Arithmetica, 1993
The theory of Hecke operators acting on Siegel modular forms of integral weight and in particular on theta series of integral positive definite quadratic forms in an even number of variables has been developed in great detail by \textit{A. N. Andrianov} [see e.g. his book ``Quadratic forms and Hecke operators'' (Grundlehren Math. Wiss.
Myung-Hwan Kim
openalex   +2 more sources

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

open access: bronzeProceedings 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 =
Rhonda L. Hatcher
openalex   +3 more sources

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

open access: bronzeMathematical 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;
Ken Ono, Jorge Jiménez Urroz
openalex   +2 more sources

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

open access: greenPacific 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.
Pavel Guerzhoy   +2 more
openalex   +7 more sources

Modular forms of half-integral weights on SL(2,Z) [PDF]

open access: greenNagoya Mathematical Journal, 2011
Abstract In this paper, we prove that, for an integer r with (r, 6) = 1 and 0 < r < 24 and a nonnegative even integer s, the set is isomorphic to as Hecke modules under the Shimura correspondence. Here Ms(1) denotes the space of modular forms of weight is the space of newforms of weight 2k on Γ0 (6) that are ...
Yifan Yang
openalex   +4 more sources

Equidistribution of signs for modular eigenforms of half integral weight [PDF]

open access: greenArchiv der Mathematik, 2013
8 pages; typos corrected, final version, accepted for publication in Archiv der ...
Ilker Inam, Gabor Wiese
openalex   +8 more sources

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