Toward explicit formulas for higher representation numbers of quadratic forms

Autor: Walling, Lynne H.
Rok vydání: 2011
Předmět:
Druh dokumentu: Working Paper
Popis: It is known that average Siegel theta series lie in the space of Siegel Eisenstein series. Also, every lattice equipped with an even integral quadratic form lies in a maximal lattice. Here we consider average Siegel theta series of degree 2 attached to maximal lattices; we construct maps for which the average theta series is an eigenform. We evaluate the action of these maps on Siegel Eisenstein series of degree 2 (without knowing their Fourier coefficients), and then realise the average theta series as an explicit linear combination of the Eisenstein series.
Databáze: arXiv