Suppose your were an idiot and suppose you were a member of Congress... But I repeat myself.
by Mark Twain (1835 - 1910)

My talks at IMPA (streaming videos)

Geometry of Gelfand-Cetlin integrable system (Conservative dynamics and symplectic geometry  2009):

Dynamics on Poisson manifolds (Poisson 2010):

(now that I listened to my own talk at IMPA, I found that my English was really horrible !)

For all video lectures recorded by IMPA: