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发表时间:2019-08-30 阅读次数:193次
报告题目: On the density of entropies of factor maps of subshifts on countable amenable groups
报 告 人:Uijin Jung
报告人所在单位:Ajou University, Korea
报告日期:2019-08-30 星期五
报告时间:16:30-17:20
报告地点:光华楼东主楼1801
  
报告摘要:
Let G be a countable amenable group and X be a subshift over G. We show that the set of topological entropies of symbolic factors of X is dense in the interval [0, h(X)]. There were known results for the case of Z-topological dynamics by Shub-Weiss and Lindenstrauss. Our development uses a general marker lemma for amenable groups, and quasi-tilings of the group to estimate the entropies of factors of X defined by clopen sets generated by marker lemma. We also present relativized version of the result. This is a joint work with Ronnie Pavlov and Kevin McGoff.
 
 
  
本年度学院报告总序号:192

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