Modular dynamical systems on networks

Lee DeVille, Eugene Lerman
2015 Journal of the European Mathematical Society (Print)  
We propose a new framework for the study of continuous time dynamical systems on networks. We view such dynamical systems as collections of interacting control systems. We show that a class of maps between graphs called graph fibrations give rise to maps between dynamical systems on networks. This allows us to produce conjugacy between dynamical systems out of combinatorial data. In particular we show that surjective graph fibrations lead to synchrony subspaces in networks. The injective graph
more » ... ibrations, on the other hand, give rise to surjective maps from large dynamical systems to smaller ones. One can view these surjections as a kind of "fast/slow" variable decompositions or as "abstractions" in the computer science sense of the word.
doi:10.4171/jems/577 fatcat:5rqzkf4tuvckzh2ctobnow6aw4