Continued fractions, Rauzy inductions and random walks

15.06.2023 15:00 - 17:00

Charles Fougeron (USPN)

Many clever techniques have been developed to study the particular parabolic dynamics of multidimensional continued fractions and Rauzy inductions in the past decades.  I will present a work that aims to unify the description of this class of systems by associating a directed graph to each of them.  The study of their dynamics is then reduced to understanding a random walk on these graphs. These random walks are quite original objects since they have an infinite memory encoded in a vector.

In a first part I will give a survey of multidimensional continued fraction algorithms and Rauzy inductions with elementary computations on examples that show the link with a random walk on a graph. After the break I will explain a result that relates their dynamical properties (ergodicity, measure of maximal entropy, ...) with a property on their graphs.

Organiser:

H. Bruin, R. Zweimüller

Location:

BZ 9, 9. OG, OMP1