*主持人：焦翔宇 副教授
*时间：2020年11月17日14：00
*地点：闵行校区数学楼102

*讲座内容简介：
We give a complete classification and characterization of OZ-type vertex operator algebras generated by Ising vector of $\sigma$-type. Furthermore we prove that all these vertex operator algebras are rational, $C_2$-cofinite and unitary, with which we prove that the classification theorem of 3-transposition groups $G_{\frac{1}{2},\frac{1}{2}}$ realizable by vertex operator algebras, given by Matsuo, still holds without the positivity assumption. This is a joint work with Ching-Hung Lam and Hiroshi Yamauchi.

*主讲人简介：
　　姜翠波教授，上海交通大学特聘教授，博士生导师，主要研究李代数及顶点算子代数理论。她多次主持国家自然基金面上项目，目前已在国内外杂志发表学术论文60余篇，其中包括J. Reine Angew. Math., Adv. Math., Trans. AMS., Math. Z., Comm. Math. Phys. 等期刊。