Beijing-Moscow Mathematics Colloquium (online)
Abstract
Roger Penrose observed four decades ago that the space of light rays of a reasonable spacetime carries a natural contact structure and raised the problem of describing the causality relation of the spacetime in its terms. The talk will survey the progress made in this direction from the seminal work of Robert Low to the more recent applications of global contact rigidity.
Bio
Corresponding member of the Russian Academy of Sciences, winner of the European Mathematical Society prize (2000).
