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Zagier proved that the traces of singular moduli, i.e., the sums of the values of the classical j-invariant over quadratic irrationalities, are the Fourier coefficients of a modular form of weight 3/2 with poles at the cusps. Using the…

Number Theory · Mathematics 2007-05-23 Jan Hendrik Bruinier , Jens Funke

We show that the twisted traces of CM values of weak Maass forms of weight 0 are Fourier coefficients of vector valued weak Maass forms of weight 3/2. These results generalize work by Zagier on traces of singular moduli. We utilize a…

Number Theory · Mathematics 2013-04-05 Claudia Alfes , Stephan Ehlen

We compute the Fourier coefficients of analogues of Kohnen and Zagier's modular forms $f_{k,D}$ of weight $2$ and negative discriminant. These functions can also be written as twisted traces of certain weight $2$ Poincar\'e series with…

Number Theory · Mathematics 2018-04-18 Steffen Löbrich

Zagier proved that the traces of singular values of the classical j-invariant are the Fourier coefficients of a weight 3/2 modular form and Duke provided a new proof of the result by establishing an exact formula for the traces using…

Number Theory · Mathematics 2007-05-23 Dohoon Choi , Daeyeol Jeon , Soon-Yi Kang , Chang Heon Kim

Borcherds-Zagier bases of the spaces of weakly holomorphic modular forms of weights 1/2 and 3/2 share the Fourier coefficients which are traces of singular moduli. Recently, Duke, Imamo\={g}lu, and T\'{o}th have constructed a basis of the…

Number Theory · Mathematics 2013-01-01 Daeyeol Jeon , Soon-Yi Kang , Chang Heon Kim

Zagier proved that the generating series for the traces of singular moduli is a \textit{weakly holomorphic} modular form of weight 3/2 on $\Gamma_0(4)$. Bruinier and Funke extended the results of Zagier to modular curves of arbitrary genus.…

Number Theory · Mathematics 2011-05-09 D. Choi

We derive a formula for the regularized trace of operators with compact spectrum which act on the space of square integrable functions on the quotient of a semisimple Liegroup of real rank one by a convex-cocompact subgroup. The sum of…

Differential Geometry · Mathematics 2007-05-23 U. Bunke , M. Olbrich

We consider the Cohen-Macaulay compactification of the space of twisted cubics in projective n-space. This compactification is the fine moduli scheme representing the functor of CM-curves with Hilbert polynomial 3t+1. We show that the…

Algebraic Geometry · Mathematics 2024-09-25 Katharina Heinrich , Roy Skjelnes , Jan Stevens

After Zagier proved that the traces of singular moduli $j(z)$ are Fourier coefficients of a weakly holomorphic modular form, various properties of the traces of the singular values of modular functions mostly on the full modular group…

Number Theory · Mathematics 2009-04-27 Soon-Yi Kang , Chang Heon Kim

Recently, Amderberhan, Griffin, Ono, and Singh started the study of "traces of partition Eisenstein series" and used it to give explicit formulas for many interesting functions. In this note we determine the precise spaces in which they…

Number Theory · Mathematics 2024-10-08 Kathrin Bringmann , Badri Vishal Pandey

We count invariants of the moduli spaces of twisted Higgs bundles on a smooth projective curve.

Algebraic Geometry · Mathematics 2019-01-21 Sergey Mozgovoy , Ronan O'Gorman

We establish upper bounds for shifted moments of modular $L$-functions to a fixed modulus as well as quadratic twists of modular $L$-functions under the generalized Riemann hypothesis. Our results are then used to establish bounds for…

Number Theory · Mathematics 2024-12-18 Peng Gao , Liangyi Zhao

Zagier's well-known work on traces of singular moduli relates the coefficients of certain weakly holomorphic modular forms of weight $1/2$ to traces of values of the modular $j$-function at imaginary quadratic points. A real quadratic…

Number Theory · Mathematics 2015-06-12 Nickolas Andersen

We use relative trace formula to prove a non-vanishing result and a subconvexity result for the twisted base change $L$-functions associated to Hilbert modular forms whose local components at ramified places are some supercuspidal…

Number Theory · Mathematics 2017-09-12 Qinghua Pi

The Fourier coefficient of a second order Eisenstein series is described as a shifted convolution sum. This description is used to obtain the spectral decomposition of and estimates for the shifted convolution sum.

Number Theory · Mathematics 2013-08-27 Nikolaos Diamantis , Roelof Bruggeman

We give explicit expressions for the Fourier coefficients of Eisenstein series twisted by Dirichlet characters and modular symbols on $\Gamma_0(N)$ in the case where $N$ is prime and equal to the conductor of the Dirichlet character. We…

Number Theory · Mathematics 2019-05-28 Alexander Cowan

We want to compute generic $\mathrm{Ext}$-spaces of twisted polynomial functors in relation to the $\mathrm{Ext}$-spaces of the untwisted ones, modulo a parametrisation. Thanks to the study of a spectral sequence we get to a computation in…

Algebraic Topology · Mathematics 2026-01-28 Iacopo Giordano

In an important paper, Zagier proved that certain half-integral weight modular forms are generating functions for traces of polynomials in the $j$-function. It turns out that Zagier's work makes it possible to algorithmically compute…

Number Theory · Mathematics 2019-10-16 Lea Beneish , Hannah Larson

In this work, we describe the Cohen-Macaulay space CM of twisted cubics parameterizing curves $C$ together with a finite map $i: C \to \mathbb{P}^3$ that is generically a closed immersion and such that $C$ has Hilbert polynomial $p(t)=3t+1$…

Algebraic Geometry · Mathematics 2014-03-26 Katharina Heinrich

Gross, Kohnen and Zagier proved an averaged version of the algebraicity conjecture for special values of higher Green's functions on modular curves. In this work, we study an analogous problem for special values of Green's functions on…

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