Geometric and p-adic Modular Forms of Half-Integral Weight

p-adic interpolation of half-integral weight modular forms

The p-adic interpolation of modular forms on congruence subgroups of SL2(Z) has been succesfully used in the past to interpolate values of L-series. In [12], Serre interpolated the values at negative integers of the ζ-series of a totally real number field (in fact of L-series of powers of the Teichmuller character) by interpolating Eisenstein series, which are holomorphic modular forms, and loo...

GEOMETRIC AND p-ADIC MODULAR FORMS OF HALF-INTEGRAL WEIGHT by

P-adic Family of Half-integral Weight Modular Forms and Overconvergent Shintani Lifting

Abstract. The goal of this paper is to construct the p-adic analytic family of overconvergent half-integral weight modular forms using Hecke-equivariant overconvergent Shintani lifting. The classical Shintani map(see [Shn]) is the Hecke-equivariant map from the space of cusp forms of integral weight to the space of cusp forms of half-integral weight. Glenn Stevens proved in [St1] that there is ...

P -adic Family of Half-integral Weight Modular Forms via Overconvergent Shintani Lifting

The classical Shintani map (see [Shn]) is the Hecke-equivariant map from the space of cusp forms of integral weight to the space of cusp forms of half-integral weight. In this paper, we will construct a Hecke-equivariant overconvergent Shintani lifting which interpolates the classical Shintani lifting p-adically, following the idea of G. Stevens in [St1]. In consequence, we get a formal q-expan...

MAT1200: Modular Forms of Half Integral Weight