Geometric Structures - Hamza Ounesli - June 22 - 4:15 pm (Rome Time)

[Miruna - Stefana Sorea]

Dear All, 

This is to announce the next seminar from the series "Geometric
Structures".

Speaker:  HAMZA OUNESLI [1](SISSA and ICTP) [1] 

Title:       Minimal entropy of geometric 3-manifolds 

Time:      June 22, 2021, 4:15 pm (Rome Time)  

Venue:    from remote only, on zoom at this link 
https://sissa-it.zoom.us/j/85675591787?pwd=TUo2VXpmcEhOU1paRzBXUWp2MU1odz09
[2]
Passcode: geometry

Abstract:  
For a closed smooth manifold M it's natural to ask whether there exists
a Riemannian metric which has minimal topological entropy. In this
seminar we will investigate this question in dimension 3. First we will
recall the results of A.Katok in dimension 2, then we will describe
Anderson-Paternain results: which geometric 3-manifolds have metrics of
minimal entropy? It turns out the answer is positive except when M is
modelled on H^2*R, Sol or the universal cover of PSL(2,R), A crucial
point is that only manifolds modelled on H^3 have positive minimal
entropy which reveals in fact a chaotic aspect of negative curvature! 

More information can be found here:
https://sites.google.com/view/geometric-structures/ [3] 

Everyone is welcome! 
-- 
_Miruna-Stefana Sorea_
_Postdoctoral Researcher_
_Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste,
Italy_
_HTTPS://SITES.GOOGLE.COM/VIEW/MIRUNASTEFANASOREA/_ 

Links:
------
[1]
https://www.google.com/url?q=https%3A%2F%2Fwww.math.sissa.it%2Fusers%2Fhamza-ounesli&sa=D&sntz=1&usg=AFQjCNGLNwQhsmmcB8QoDg6BHXxIsNtYsQ
[2]
https://sissa-it.zoom.us/j/85675591787?pwd=TUo2VXpmcEhOU1paRzBXUWp2MU1odz09
[3] https://sites.google.com/view/geometric-structures/