433 citations · 469 across the 12 of their papers we have counts for
13 papers
An Elementary Approach to the Group Law on Elliptic Curves
Sander Zwegers
We revisit the group structure on elliptic curves and give a simple and elementary proof of the associativity of the addition. We do this by providing an explicit formula for the s…
The mixed mock modularity of certain duals of generalized quantum modular forms of Hikami and Lovejoy
Eric T. Mortenson, Sander Zwegers
We express a family of Hecke--Appell-type sums of Hikami and Lovejoy in terms of mixed mock modular forms; in particular, we express the sums in terms of Appell functions and theta…
Theta Series for Quadratic Forms of Signature with (Spherical) Polynomials
Christina Roehrig, Sander Zwegers
We construct almost holomorphic and holomorphic modular forms by considering theta series for quadratic forms of signature . We include homogeneous and spherical polynomia…
Rank two false theta functions and Jacobi forms of negative definite matrix index
Kathrin Bringmann, Jonas Kaszian, Antun Milas +1
In this paper, we study a family of rank two false theta series associated to the root lattice of type . We show that these functions appear as Fourier coefficients of a merom…
On the modularity of certain functions from the Gromov-Witten theory of elliptic orbifolds
Kathrin Bringmann, Larry Rolen, Sander Zwegers
In this paper, we study modularity of several functions which naturally arose in a recent paper of Lau and Zhou on open Gromov-Witten potentials of elliptic orbifolds. They derived…
On the Fourier coefficients of negative index meromorphic Jacobi forms
Kathrin Bringmann, Larry Rolen, Sander Zwegers
In this paper, we consider the Fourier coefficients of meromorphic Jacobi forms of negative index. This extends recent work of Creutzig and the first two authors for the special ca…