Dominant Vertices in Regulatory Networks Dynamics

Details Dominant Vertices in Regulatory Networks Dynamics Dominant Vertices in Regulatory Networks Dynamics

2007-08-04

arxiv.org/abs/0708.0595v1

Nonlinear Sciences

Adaptation and Self-Organizing Systems

Scientific paper

10.1016/j.physd.2008.04.007

Discrete-time regulatory networks are dynamical systems on directed graphs, with a structure inspired on natural systems of interacting units. There is a natural notion of determination amongst vertices, which we use to classify the nodes of the network, and to determine what we call "sets of dominant vertices". In this paper we prove that in the asymptotic regime, the projection of the dynamics on a dominant set allows us to determine the state of the whole system at all times. We provide an algorithm to find sets of dominant vertices, and we test its accuracy on three families of theoretical examples. Then, by using the same algorithm, we study the relation between the structure of the underlying network and the corresponding dominant set of vertices. We also present a result concerning the inheritability of the dominance between strongly connected networks.

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