English

Explicitly realizing average Siegel theta series as linear combinations of Eisenstein series

Number Theory 2017-02-22 v1

Abstract

We find nice representatives for the 0-dimensional cusps of the degree nn Siegel upper half-space under the action of Γ0(\stufe)\Gamma_0(\stufe). To each of these we attach a Siegel Eisenstein series, and then we make explicit a result of Siegel, realizing any integral weight average Siegel theta series of arbitrary level \stufe\stufe and Dirichlet character χL\chi_L modulo \stufe\stufe as a linear combination of Siegel Eisenstein series.

Keywords

Cite

@article{arxiv.1702.06494,
  title  = {Explicitly realizing average Siegel theta series as linear combinations of Eisenstein series},
  author = {Lynne H. Walling},
  journal= {arXiv preprint arXiv:1702.06494},
  year   = {2017}
}