par  Arrighi, Pablo;Martiel, Simon;Wang, Zizhu 
Référence Electronic proceedings in theoretical computer science, 144, page (30-40)
Publication Publié, 2014-03
          
Référence Electronic proceedings in theoretical computer science, 144, page (30-40)
Publication Publié, 2014-03
                                                                                                       
			Article révisé par les pairs
                                                  
        | Résumé : | We formalize the intuitive idea of a labelled discrete surface which evolves in time, subject to two natural constraints: the evolution does not propagate information too fast; and it acts everywhere the same. | 



