ESTIMATES OF FOURIER COEFFICIENTS OF SIEGEL CUSP FORMS FOR SUBGROUPS AND IN THE CASE OF SMALL WEIGHT

Here we develop estimates for Fourier coefficients of Siegel cusp forms. First we consider the case of Siegel modular forms for the full modular group Γg having small weight (that is, weight k = g+1). Afterwards the case of a certain subgroup Γg,0(N) of Γg is considered.