Sympletic topology from Poincaré to Gromov
1:10:16
Poincaré's Probability
35:50
Barry Mazur and the Infinite Cheese of Knowledge
48:06
3.4 Discussion on Geometry with introduction by M. Gromov
1:48:32
Mikhael Gromov - 2/6 Probability, symmetry, linearity
16:00
A (very) Brief History of Henri Poincaré
27:26
This open problem taught me what topology is
46:34
The Poincaré Conjecture (special lecture) John W. Morgan [ICM 2006]
39:28