Modular invariants and fractional Dehn twists
发布人: 曹思圆   发布时间: 2022-05-15   浏览次数: 10

*时间:20220517日 1500-1600

*地点:腾讯会议: 571-772-382

*主讲人:刘小雷 副教授

*主持人:张通 研究员

*讲座内容简介:

Modular invariants of families of curves appear in various mathematical branches. Specially, in lower-dimensional topology, the modular invariant $\delta(f)$ is the sum of fractional Dehn twists coefficients. In this talk, I will present our work on the sharp lower bounds of modular invariants, which based on the lower bounds of fractional Dehn twists coefficients. This is a joint work with Prof. Sheng-Li Tan.

*主讲人简介:

刘小雷2012年博士毕业于华东师范大学,导师为谈胜利教授,他曾在香港科技大学,中国科学院数学与系统科学研究院从事博士后工作,现任大连理工大学数学科学学院副教授。