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

来源: 11-23

时间:Wed.,10:00-11:00am, Nov.23, 2022

地点:Tencent Meeting ID: 716-229-181 Password: 2311

主讲人:杨南君 Nanjun Yang

Abstract

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.

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