Academics

Homotopy of manifolds through a cubic method

Time:2023-05-08 Mon 11:00-12:00

Venue:Venue:1131 ZOOM:787 662 9899(PW: BIMSA)

Organizer:Jie Wu, Nanjun Yang, Jingyan Li

Speaker:Ruizhi Huang AMSS, CAS

Abstract

In several occasions, I have talked about some recent progresses on the unstable homotopy of manifolds made by Stephen Theriault and myself. But no details of the proof were presented. In this homotopy seminar talk, I would like to focus on one work in this project, that is, the loop homotopy decomposition of manifolds stabilized by projective spaces. We may work out some proofs together, especially the cubic diagram arguments.


Speaker Intro

黄瑞芝于2017底在新加坡国立大学获数学博士学位,之后在中国科学院数学与系统科学研究院工作至今。主要研究代数拓扑及其在流形拓扑、微分几何与数学物理中的应用。研究成果发表于Adv. Math., Tran. AMS, J. Lon. Math. Soc, Annales l'Institut Fourier, Math. Z.等数学期刊。

DATEMay 8, 2023
SHARE
Related News
    • 0

      Differential Geometry Seminar | Stability of weighted extremal manifolds through blowups

      Abstract:The weighted extremal Kähler metrics introduced by Lahdili provide a vast generalisation of Calabi's extremal Kähler metrics, encompassing many examples of canonical metrics in geometry. In this talk, I will give a quick introduction to these metrics, and discuss the proof that weighted extremal manifolds are relatively weighted K-polystable, in a suitable sense. The proof is along th...

    • 1

      Cubic threefolds with an involution and their intermediate Jacobians

      AbstractWe study the moduli space of cubic threefolds admitting an involution via the period map sending such a cubic threefold to the invariant/anti-invariant part of the intermediate Jacobian. Our main result is global Torelli holds for the period map. Key ingredients of the proof include a description of the invariant/anti-invariant part of the intermediate Jacobian as a Prym variety and a d...