Thomae's formulae for non-hyperelliptic curves and spinorial square roots of theta-constants on the moduli space of curves
Abstract
Description
Determinantal formulae for Jacobian theta functions that go back to Klein are elaborated, via an idea due to Matone and Volpato. Also, the natural square roots of theta constants on the moduli space of curves whose existence was shown by Tsuyumine are proved to have a spinorial structure.
38 pages, section ``Preliminaries'' expanded into ``Principal symmetric abelian torsors'' and ``Level structures and moduli''
38 pages, section ``Preliminaries'' expanded into ``Principal symmetric abelian torsors'' and ``Level structures and moduli''