学术报告
报告题目：S-matrix in orbifold theory
报告人：任丽教授
报告时间：2020/12/13 10:00-11:00
报告形式：腾讯会议
会议 ID：608 831 266
报告摘要：Let V be a simple vertex operator algebra and G a finite automorphism group of V such that V^G is regular. It is proved that every irreducible V^G module occurs in an irreducible g-twisted V-module for some g in G and the global dimension of V is independent of any finite order automorphisim of V. Moreover, the S-matrix associated to a rational orbifold theory is determined. In the case of permutation orbifolds, the S-matrix is given explicitly in terms of the S matrices of the original vertex operator algebra. This is a joint work with Chongying Dong and Feng Xu.
报告人简介：任丽，四川大学数学学院教授。主要研究领域为李代数和顶点算子代数，在Adv. Math.、Trans. Amer. Math. Soc.、J. Algebra等著名SCI杂志发表论文多篇。主持国家自然科学基金面上项目和青年项目、国家博士后特别基金等项目。