Periods on the moduli space of genus 0 curves
arXiv:0911.2671
Abstract
This report outlines a combinatorial recipe for computing the bases, whose elements are oriented polygons, of two cohomology spaces associated to multizeta values: the top dimensional de Rham cohomology of moduli spaces of genus 0 complex pointed curves and the top dimensional de Rham cohomology of certain partial compactifications of these moduli spaces.
Talk given at the MFO Arithmetic and Differential Galois Groups workshop, May 13-19 2007