[Todos CMAT] Seminario este Viernes- Valerie Berthe

[Dr. Roberto Markarian - IMERL]

Lamento no poder concurrir. Saludos, rm

On Tue, 1 Oct 2013, Rafael Potrie wrote:

> Hola todos,
> Este viernes a las 14.30 en el IMERL escucharemos a Valerie Berthe (CNRS,
> IMJ, Paris) que hablará sobre "Pisot numbers and beyond" (abajo va el
> resumen). 
> 
> Son todos bienvenidos,
> 
> 
> 
> 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> 
> Viernes 4 de octubre, Valerie Berthe (CNRS, IMJ) "Pisot numbers and
> beyond"
>
>             Properties of  substitutive symbolic dynamical
>             systems   under the Pisot hypothesis tend now to
>             be well understood.
>             They are conjectured to have pure discrete
>             spectrum.
>             The aim of this lecture is  first to recall  this
>              conjecture (the Pisot conjecture), but also
>             to discuss   current  extensions   with
>             nonalgebraic parameters to the so-called S-adic
>             framework.
>             We illustrate these extensions with  expansions
>             issued from  multidimensional continued fraction
>             algorithms,
>             which yields  in particular  explicit symbolic
>             codings for a.e. toral translation  on the
>             two-dimensional torus.
> 
> 
> --
> Rafael Potrie
> rafaelpotrie en gmail.com
> http://www.cmat.edu.uy/~rpotrie/
> 
>