On the Borisov-Gunnells relations for products of Eisenstein series
François Brunault
Published: 2024/4/11
Abstract
Borisov and Gunnells have proved that certain linear combinations of products of Eisenstein series are Eisenstein series themselves, in analogy with the Manin relations for modular symbols. We devise a new method for determining and proving such relations, by differentiating with respect to the parameters of the Eisenstein series.