Seminars take place in the seminar room, second floor of the building Le Chablais, on the Bourget-du-lac (Savoy) site.

## Next seminar:

**Thursday 25th January 2018 at 14h
**
Gilles Lebeau
(Univ Nice Sophia-Antipolis),
*Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles*

Abstract:(Hide abstracts)

We consider the linear wave equation and the linear Schrödinger equation outside a compact, strictly convex obstacle in Rd with smooth boundary. In dimension d=3 we show that the linear wave flow and the linear Schrödinger flow satisfy the dispersive estimates as in R3. For d> 3, if the obstacle is a ball, we show that there exists points where the dispersive estimates fail for both wave and Schrödinger equations.

The seminar of the team Labo is under the responsibility of
Michel Raibaut.

**Settings:**
See with
increasing date
.
Hide abstracts

Other years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
all years together.

# Year 2018

**Thursday 25th January 2018 at 14h
**
Gilles Lebeau
(Univ Nice Sophia-Antipolis),
*Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles*

Abstract:(Hide abstracts)

We consider the linear wave equation and the linear Schrödinger equation outside a compact, strictly convex obstacle in Rd with smooth boundary. In dimension d=3 we show that the linear wave flow and the linear Schrödinger flow satisfy the dispersive estimates as in R3. For d> 3, if the obstacle is a ball, we show that there exists points where the dispersive estimates fail for both wave and Schrödinger equations.

**Thursday 18th January 2018 at 14h
**
Pierre Arnoux
(Marseille),
*Fractions continues multidimensionnelles : dynamique, arithmétique et combinatoire*

Abstract:(Hide abstracts)

Dans cette exposé, on montre comment donner une interprétation géométrique et dynamique à certains algorithmes de fraction continues multidimensionnelles; cela permet, en utilisant l'algorithme de Brun, de donner un modèle symbolique pour le flot des chambres de Weil.

The seminar of the team Labo is under the responsibility of
Michel Raibaut.

**Settings:**
See with
increasing date
.
Hide abstracts

Other years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
all years together.