题目：Rigidity for square tiled interval exchange transformations 

报告人：Sebastien Ferenczi，Institut de Mathématiques de Marseille，France

时间：2017年6月13日下午4：30-5：30

地点：管理科研楼数学学院1518教室

摘要: we look at interval exchanges defined as first return maps on the set of diagonals of a flow of direction $\alpha$ on a square-tiled surface: our main result is to show, by a combinatorial approach, that they are not rigid when the surface has at least one true singularity and $\alpha$ has bounded partial quotients.

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