Title：The proper definition and Wielandt-Hartley's theorem for X-submaximal subgroups 

Speaker：Andrey Vasilyev  (Sobolev Institute of Mathematics and Novosibirsk State University)

Time：2019年4月11日（周四）  下午16:00-17:00

Room：东区管理科研楼 数学科学学院1318室

Abstract：Let X be a complete class of finite groups, i.e., that is a class closed under taking subgroups, homomorphic images and extensions. We are going to discuss two definitions of X-submaximal subgroups belonging to H. Wielandt. We give an example showing that they are nonequivalent and explain how the new and proper version of Wielandt-Hartley looks like.

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