Some aspects of Hermitian Jacobi forms

Details Some aspects of Hermitian Jacobi forms Some aspects of Hermitian Jacobi forms

2009-10-22

arxiv.org/abs/0910.4306v1

Mathematics

Number Theory

12 pages

Scientific paper

We introduce a certain differential (heat) operator on the space of Hermitian Jacobi forms of degree 1, show it's commutation with certain Hecke operators and use it to construct a lift of elliptic cusp forms to Hermitian Jacobi cusp forms. We construct Hermitian Jacobi forms as the image of the tensor product of two copies of Jacobi forms and also from differentiation of the variables. We determine the number of Fourier coefficients that determine a Hermitian Jacobi form and use it to embed a certain subspace of Hermitian Jacobi forms into a direct sum of modular forms for the full modular group.

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