Graphs for Core Molecular Biology
CMSB '03 Proceedings of the First International Workshop on Computational Methods in Systems Biology
Transactions on Computational Systems Biology VII
Necessary conditions for multistationarity in discrete dynamical systems
Discrete Applied Mathematics
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We study rules proposed by the biologist R. Thomas relating the structure of a concurrent system of interacting genes (represented by a signed directed graph called a regulatory graph) with its dynamical properties. We prove that the results in [10] are stable under projection, and this enables us to relax the assumptions under which they are valid. More precisely, we relate here the presence of a positive (resp. negative) circuit in a regulatory graph to a more general form of biological differentiation (resp. of homeostasis).