Three series of lectures were given at the 34th Probability Summer School in Saint-Flour (July 6 24, 2004), by the Professors Cerf, Lyons and Slade. We have decided to publish these courses separately. This volume contains the course of Professor Slade. We cordially thank the author for his performance at the summer school, and for the redaction of these notes. 69 participants have attended this school. 35 of them have given a short lecture. The lists of participants and of short lectures are enclosed at the end of the volume. The Saint-Flour Probability Summer School was founded in 1971....
Three series of lectures were given at the 34th Probability Summer School in Saint-Flour (July 6 24, 2004), by the Professors Cerf, Lyons and Slade. W...
