报告题目:Short survey on Thermodynamic formalism (4)


报告人  Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月12日09:30-10:30


报告地点  维格堂319


报告摘要  In this talk, I shall focus on the pure mathematical viewpoint and explain the connection between Gibbs measures and the unique ergodicity of the horocyclic flow on Riemmannian manifolds with negative curvature.


报告题目:Short survey on Thermodynamic formalism (5)


报告人 Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月12日10:30-11:30


报告地点  维格堂319


报告摘要  In this talk, I shall explain the connection between Gibbs measures within the ergodic viewpoint on the one hand and the mean-field theory (Curie-Weiss models) on the other hand. I shall in particular explain the differences between the notions of phase transitions.


报告题目: Short survey on Thermodynamic formalism (6)


报告人  Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月12日11:30-12:30


报告地点  维格堂319


报告摘要  I In the last talk, I shall give the summary of what I have talked on thermodynamic formalism.




报告题目:An example of family of Kupka Smale diffeos with cubic tangency (1)


报告人  Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月13日09:30-10:30


报告地点  维格堂319


报告摘要 In the first talk, I will basic definitions and properties about Kupka-Smale theory..


报告题目:An example of family of Kupka Smale diffeos with cubic tangency (2)


报告人 Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月13日10:30-11:30


报告地点  维格堂319


报告摘要 In the second talk, I will show the history of Kupka-Smale theory and I shall explain why our example plays an important role in this area.


报告题目: An example of family of Kupka Smale diffeos with cubic tangency (3)


报告人  Renaud Leplaideur(Universite de Brest)



报告时间 2017年4月13日11:30-12:30


报告地点  维格堂319


报告摘要 In the last talk, I shall present the construction of a family of diffeos on the surface that are Kupka-Smale (every periodic point is hyperbolic) but contains an heteroclinic cubic tangency. I shall explain the motivations for such an explicit construction.