MS Seminar (Mathematics - String Theory)

Speaker: Felix Janda (IMJ-PRG)
Title: A formula for the double ramification cycle
Date: Thu, Nov 05, 2015, 13:30 - 15:00
Place: Seminar Room B
Abstract: Given positive integers a_1,...,a_n, informally, the double ramification cycle is the Poincaré dual class of the locus inside the DM moduli space M_{g,n} of stable, marked algebraic curves (C,p_1,...p_n) such that the divisor sum a_i [p_i] is principal. We will present an explicit formula for the double ramification cycle. This is joint work with R. Pandharipande, A. Pixton and D. Zvonkine.