Mock-modular Forms of Weight One
نویسندگان
چکیده
The object of this paper is to initiate a study of the Fourier coefficients of a weight one mock-modular form and relate them to the complex Galois representations associated to the form’s shadow, which is a weight one newform. In this paper, our focus will be on weight one dihedral newforms of prime level p ≡ 3 (mod 4). In this case we give properties of the Fourier coefficients themselves that are similar to (and sometimes reduce to) cases of Stark’s conjectures on derivatives of L-functions. We also give a new modular interpretation of certain products of differences of singular moduli studied by Gross and Zagier. Finally, we provide some numerical evidence that the Fourier coefficients of a mockmodular form whose shadow is exotic are similarly related to the associated complex Galois representation.
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