（I）Abelian symmetries in multi-Higgs-doublet models
讲座题目：Abelian symmetries in multi-Higgs-doublet models
主 讲 人：Evgeny Vdovin 教授、副所长
讲座时间：2019年3月22日14:00-14:30时
讲座地点：理学院钱伟长楼 202会议室
欢迎有兴趣的师生前来聆听！
讲座内容简介：
Since birth the group theory established deep connections with distinct areas of mathematics and other sciences. In 2008 the famous Abelian prize in mathematics was given to two specialists in groups theory for their progress in solving the classification of finite simple groups problem.In the talk we discuss recent progress in physics of elementary particles obtained by using the power of group theory.
（II）Periodic groups whose element orders are small
讲座题目：Periodic groups whose element orders are small
主 讲 人：Andrey Mamontov 教授
讲座时间：2019年3月22日14:40-15:10时
讲座地点：理学院钱伟长楼 202会议室
欢迎有兴趣的师生前来聆听！
讲座内容简介：
Consider a periodic group G, and the set of its element orders ω(G), which is called spectrum. Assume that ω(G) is given. We discuss conditions, which guarantee that a corresponding group G is locally finite, i.e. each its finite subset generates a finite subgroup. In particular, we discuss the problem of recognizing nonabelian finite simple groups by spectrum in the class of periodic groups.
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俄罗斯科学院Sobolev数学研究所（S.L.Sobolev's Institute of Mathematics SB RAS）是国际一流的数学研究机构。Evgeny Vdovin 教授、Andrey Mamontov教授及Sobolev数学研究所的详细介绍参见：http://www.math.nsc.ru/english.html（英文）
