English

An action of the Polishchuk differential operator via punctured surfaces

Algebraic Geometry 2019-04-17 v1

Abstract

For a family of Jacobians of smooth pointed curves there is a notion of tautological algebra. There is an action of sl2\mathfrak{sl}_2 on this algebra. We define and study a lifting of the Polishchuk operator, corresponding to fsl2f\in \mathfrak{sl}_2, on an algebra consisting of punctured Riemann surfaces. As an application we prove that a collection of tautological relations on moduli of curves, discovered by Faber and Zagier, come from a class of relations on the universal Jacobian.

Keywords

Cite

@article{arxiv.1904.07520,
  title  = {An action of the Polishchuk differential operator via punctured surfaces},
  author = {Gabriel C. Drummond-Cole and Mehdi Tavakol},
  journal= {arXiv preprint arXiv:1904.07520},
  year   = {2019}
}

Comments

37 pages