Results 31 to 40 of about 10,606 (255)

Explicit construction of mock modular forms from weakly holomorphic Hecke eigenforms

open access: yesOpen Mathematics, 2022
Extending our previous work we construct weakly holomorphic Hecke eigenforms whose period polynomials correspond to elements in a basis consisting of odd and even Hecke eigenpolynomials induced by only cusp forms.
Choi SoYoung, Kim Chang Heon
doaj   +1 more source

On divisors of modular forms

open access: yesAdvances in Mathematics, 2018
The denominator formula for the Monster Lie algebra is the product expansion for the modular function $j(z)-j(τ)$ given in terms of the Hecke system of $\operatorname{SL}_2(\mathbb Z)$-modular functions $j_n(τ)$. It is prominent in Zagier's seminal paper on traces of singular moduli, and in the Duncan-Frenkel work on Moonshine.
Bringmann, Kathrin   +4 more
openaire   +5 more sources

Holomorphic subgraph reduction of higher-point modular graph forms

open access: yesJournal of High Energy Physics, 2019
Modular graph forms are a class of modular covariant functions which appear in the genus-one contribution to the low-energy expansion of closed string scattering amplitudes.
Jan E. Gerken, Justin Kaidi
doaj   +1 more source

Visualizing Modular Forms

open access: yes, 2021
We examine several currently used techniques for visualizing complex-valued functions applied to modular forms. We plot several examples and study the benefits and limitations of each technique. We then introduce a method of visualization that can take advantage of colormaps in Python's matplotlib library, describe an implementation, and give more ...
openaire   +2 more sources

Shintani and Shimura lifts of cusp forms on certain arithmetic groups and their applications

open access: yesOpen Mathematics, 2017
For an odd and squarefree level N, Kohnen proved that there is a canonically defined subspace Sκ+12new(N)⊂Sκ+12(N),andSκ+12new(N)andS2knew(N)$S_{\kappa+\frac{1}{2}}^{\mathrm{n}\mathrm{e}\mathrm{w}}(N)\subset S_{\kappa+\frac{1}{2}}(N),\,\,{\text{and ...
Choi SoYoung, Kim Chang Heon
doaj   +1 more source

Double cover of modular S4 for flavour model building

open access: yesNuclear Physics B, 2021
We develop the formalism of the finite modular group Γ4′≡S4′, a double cover of the modular permutation group Γ4≃S4, for theories of flavour. The integer weight k>0 of the level 4 modular forms indispensable for the formalism can be even or odd.
P.P. Novichkov, J.T. Penedo, S.T. Petcov
doaj   +1 more source

Nonsolvable number fields ramified only at 3 and 5 [PDF]

open access: yes, 2011
For p = 3 and p = 5, we exhibit a finite nonsolvable extension of Q which is ramified only at p, proving in the affirmative a conjecture of Gross.
Lassina Dembélé   +5 more
core   +1 more source

Topological Modular Forms [PDF]

open access: yes, 2014
DEFINITION 3.5. An integral modular form of weight n is a law associating to every pointed curve of genus 1 a section of wo" in a way compatible with base change.
Douglas, C   +3 more
openaire   +2 more sources

On a q-deformation of modular forms [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2019
There are many instances known when the Fourier coefficients of modular forms are congruent to partial sums of hypergeometric series. In our previous work arXiv:1803.01830, such partial sums are related to the radial asymptotics of infinite $q$-hypergeometric sums at roots of unity.
Victor J.W. Guo, Wadim Zudilin
openaire   +4 more sources

Explicit calculations of automorphic forms for definite unitary groups [PDF]

open access: yes, 2008
I give an algorithm for computing the full space of automorphic forms for definite unitary groups over Q, and apply this to calculate the automorphic forms of level G(^Z) and various small weights for an example of a rank 3 unitary group.
David Loeffler, Loeffler, David
core   +1 more source

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