Inserted: 4 mar 2010
Last Updated: 27 nov 2014
Journal: chapter in "Optimal Transportation, theory and applications", London Math. Soc.
Proceedings of the summer school "Optimal transport: Theory and applications"
These very short lecture notes do not obviously want to be an exhaustive presentation of the topic, but only a short list of results, concepts and ideas which are useful when dealing for the first time with the theory of Optimal Transport. The style that was chosen when preparing them, in view of their use during the Summer School, was highly informal and this revised version respects the same style.