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Component response rate variation underlies the stability of highly complex finite systems.

ABSTRACT: The stability of a complex system generally decreases with increasing system size and interconnectivity, a counterintuitive result of widespread importance across the physical, life, and social sciences. Despite recent interest in the relationship between system properties and stability, the effect of variation in response rate across system components remains unconsidered. Here I vary the component response rates (?) of randomly generated complex systems. I use numerical simulations to show that when component response rates vary, the potential for system stability increases. These results are robust to common network structures, including small-world and scale-free networks, and cascade food webs. Variation in ? is especially important for stability in highly complex systems, in which the probability of stability would otherwise be negligible. At such extremes of simulated system complexity, the largest stable complex systems would be unstable if not for variation in ?. My results therefore reveal a previously unconsidered aspect of system stability that is likely to be pervasive across all realistic complex systems.

SUBMITTER: Duthie AB

PROVIDER: S-EPMC7237446 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Component response rate variation underlies the stability of highly complex finite systems.

Duthie A Bradley AB

Scientific reports 20200519 1

The stability of a complex system generally decreases with increasing system size and interconnectivity, a counterintuitive result of widespread importance across the physical, life, and social sciences. Despite recent interest in the relationship between system properties and stability, the effect of variation in response rate across system components remains unconsidered. Here I vary the component response rates (γ) of randomly generated complex systems. I use numerical simulations to show tha ...[more]

PMID: 32427891

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Component response rate variation underlies the stability of highly complex finite systems.

Publications

Component response rate variation underlies the stability of highly complex finite systems.

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