中科院数学与系统科学研究院

数学研究所

代数几何研讨班

 

 

报告人:谢俊逸(雷恩第一大学)

  目:Dynamics on Surfaces

  间:2021.01.18(星期一),10:30-11:30

  点:晨兴 110

  要:The rational self-map of a surface natrually act on an infinite dimensional hyperbolic space. Applying this action, we sketch the proof of Cantat and Lamy which shows that the Cremona group of rank two is not simple.

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  报告人:谢俊逸(雷恩第一大学)

  目:Semicontinuity of the Dynamical Degree

  间:2021.01.20(星期三),10:30-11:30

  点:晨兴 110

  要:We show that the dynamical degree for rational self-maps of surfaces is lower-semi continuous in a family.

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