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Theta Blocks by Gritsenko, Valery; Skoruppa, Nils-Peter; Zagier, Don is a scholarly article available to read on EtoBox.

What is Theta Blocks about?

We define theta blocks as products of Jacobi theta functions divided by powers of the Dedekind eta-function and show that they give a powerful new method to construct Jacobi forms and Siegel modular forms, with applications also in lattice theory and algebraic geometry. One of the central questions is when a theta block defines a Jacobi form. It turns out that this seemingly simple question is connected to various deep problems in different fields ranging from Fourier analysis over infinite-dimensional Lie algebras to the theory of moduli spaces in algebraic geometry. We give several answers to this question.

Author

Gritsenko, Valery; Skoruppa, Nils-Peter; Zagier, Don

Published

2019

Language

EN