This meeting will concern dynamical systems, ergodic theory and relations with discrete mathematics, arithmetics and computer science with a special focus on open problems on low complexity dynamics.

This will be the occasion to present the state of the art of some (still)  open problems. Each  lecture will only last 30 min.  We plan an hybrid conference, i.e. in a conference room and at the same time online via Zoom.

A collection of the presentations of the problemswill be available online and  will be published in Hal/ArXiv. In the future, if  a relevant  progress is done on one  of these problems and after the agreement of the author, the document will be updated to mention the advances.

The workshop is from

the 8^th  to the 9^th of July 2021

Registration is free but mandatory (click on the registration menu at left).

Deadline is the 30^th of June 2021

Maria Isabel CORTEZ (PUC, Chile) 

Settled elements in the group of automorphisms of trees   

abstract    slides   video

Sebastian DONOSO (U. de Chile)

Multiplicative actions and applications

 abstract     slides   video

Sébastien LABBÉ (Univ. de Bordeaux)

Markov partitions for Z^2-actions

abstract     slides   video

Samuel LELIÈVRE (U. Paris-Saclay)

Billiard language of polygons

abstract     video

Julien LEROY (Univ. Liège)

Factor complexity of S-adic shifts

abstract    slides   video

Domique PERRIN (U. Paris-Est) 

Ambiguity in symbolic dynamics

abstract     slides    videohttps://plmbox.math.cnrs.fr/f/e4c9150321a941cba6cd/?dl=1https://plmbox.math.cnrs.fr/f/e4c9150321a941cba6cd/?dl=1

Wolfgang STEINER (U. de Paris) 

Multidimensional continued fractions and S-adic systems

abstract    slides  video

Thierry de la RUE (U. de Rouen)

Some questions around the Pascal-adic transformation

abstract    slides   video

Felipe Arbulú (UPJV) :                                            Rank One Systems

Christopher Cabezas (UPJV)           Homomorphisms between multidimensional constat shape substitution

Fabien Durand (UPJV)                                              Pisot conjecture for subsitution

Bastián Espinoza (UPJV-U. de Chile)                 Computing the Topological Rank of Minimal Subshifts

France Gheeraert (Univ. de Liège)                        S-adic characterization of dendric subshift

Herman Goulet-Ouellet (U. Porto)                           Suffix-Connected Languages

Martin Lustig (Aix-Marseille Univ.)                Questions at the occasion of the Dyadisc4-Conference in Amiens

The conference will take place at the Universities of Picardie Jules Verne (UPJV):

Citadelle, room E001

rue des Français libres,

Amiens.

see the map

In the virtual world, the conference will be avaible online on Zoom. 

The link will appear later.

The password will be send to the registered participants.

Some hotels close to the university are:

Appart City Amiens

Hotel Victor Hugo

Hotel Spatial

Le Saint Louis

fabien.durand@u-picardie.fr

samuel.petite@u-picardie.fr