15 citations · 104 across the 38 of their papers we have counts for
4 papers · 1 filter
Normalizers of Congruence Groups in and Automorphisms of Lattices
Shaul Zemel
We determine the normalizer in of several families of congruence subgroups of . In addition, we show how these tools can be used to evaluat…
Shimura Lifts of Weakly Holomorphic Modular Forms
Yingkun Li, Shaul Zemel
We show how to realize the Shimura lift of arbitrary level and character using the vector-valued theta lifts of Borcherds. Using the regularization of Borcherds' lift we extend the…
Generalized Riordan Groups and Operators on Polynomials
Shaul Zemel
We present an approach to generalized Riordan arrays which is based on operations in one large group of lower triangular matrices. This allows for direct proofs of many properties…
Regularized Pairings of Meromorphic Modular Forms and Theta Lifts
Shaul Zemel
We show that the meromorphic modular forms recently considered by Bringmann and Kane can be obtained as images of regularized theta lifts of Poincaré series under weight raising op…