中科院数学与系统科学研究院
数学研究所
动力系统研讨班报告
报告人: Distinguished Prof. Rostislav Grigorchuk(Texas A & M University)
题 目:Interesting example of computation of spectrum of certain group of intermediate growth
时 间:2018.07.14(星期六), 10:30-11:30
地 点:数学院南楼N913室
摘 要:
I will explain computation of the spectrum of the Cayley graph of a group of intermediate growth constructed by me in 1980. It is based on the use of the spectrum of associated Schreier graph and on the computation of a joint spectrum of a pencil of operators associated with a regular representation of infinite dihedral group. A short overview of the problematic of computation of spectra of infinite groups and graphs will be done as well.
报告人简介:
Rostislav Grigorchuk教授的主要研究领域为几何群论,群上的随机游走,动力系统等。其最著名的工作是1984年首次构造了具有过渡性增长阶的有限生成群,现在被国际上称为Grigorchuk群。Grigorchuk教授因其杰出学术贡献,于1990年在国际数学家大会上被邀请做45分钟报告。2015年获得美国数学会Steele奖。
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