Milnor-Witt Bockstein spectral sequence of moduli of stable curves with marked points

主讲人 Speaker:Yang Nanjun(BIMSA)
时间 Time:Wed.,10:00-11:00am,Nov.23,2022
地点 Venue:Tencent Meeting ID: 716-229-181 Password: 2311


We show that the MW - Bockstein spectral sequence degenerates for genus 0 case over $\mathbb{R}$ or algebraically closed fields and for genus 1 with few marked points over any field. This recovers a result of Etingof, saying that the singular cohomology of real points of genus 0 case has only 2-torsions.