2019/12/04 by Leonardo Massai, Massai, Leonardo, Giacomo Como +3
Biochemistry, Genetics and Molecular Biology · Mathematics · #Dynamical Systems (math.DS) #FOS: Mathematics #Gene Regulatory Network Analysis #math.DS
paper · pdf · doi:10.48550/arxiv.1912.01906
7 pages, 4 figures, submitted at IFAC 2020
arxiv created 2019/12/04 · openalex publication_date 2019/12/04 · arxiv updated 2019/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study deterministic continuous-time lossy dynamical flow networks with constant exogenous demands, fixed routing, and finite flow and buffer capacities. In the considered model, when the total net flow in a cell ---consisting of the difference between the total flow directed towards it minus the outflow from it--- exceeds a certain capacity constraint, then the exceeding part of it leaks out of the system. The ensuing network flow dynamics is a linear saturated system with compact state space that we analyze using tools from monotone systems and contraction theory. Specifically, we prove that there exists a set of equilibria that is globally asymptotically stable. Such equilibrium set reduces to a single globally asymptotically stable equilibrium for generic exogenous demand vectors. Moreover, we show that the critical exogenous demand vectors giving rise to non-unique equilibria correspond to phase transitions in the asymptotic behavior of the dynamical flow network.