7–11 avr. 2025
Institut de Mathématiques de Toulouse
Fuseau horaire Europe/Paris

Renormalization for foliations on surfaces

11 avr. 2025, 11:00
1h
Amphithéatre Schwartz ( Institut de Mathématiques de Toulouse)

Amphithéatre Schwartz

Institut de Mathématiques de Toulouse

Université Paul Sabatier 118, route de Narbonne - Bat. 1R3 31062 Toulouse Cedex 9

Orateur

Charles Fougeron

Description

In this talk, I will discuss a well-known renormalization technique for the first return map of foliations on surfaces, known as Rauzy-Veech induction.
A key result in this setting is the exponential tail property of the renormalization process.
It was established by Avila-Gouezël-Yoccoz in the case of interval exchange maps (associated to orientable foliations on orientable surfaces) and later by Avila-Resende for linear involutions (emerging from non-orientable foliations).
These results have significant implications for the dynamics of the Teichmüller flow and were instrumental in proving a spectral gap property.

After providing an overview of these techniques, I will explain some other strong consequences and discuss the non-orientable cases as appearing for instance in tiling billiards.

Documents de présentation

Aucun document.