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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1975 Aug;72(8):2856–2857. doi: 10.1073/pnas.72.8.2856

A topological theorem for nonlinear dynamics in chemical and ecological networks

Leon Glass 1
PMCID: PMC432875  PMID: 16592264

Abstract

A topological theorem is given which places restrictions on the numbers and types of critical points in nonlinear chemical and ecological systems, provided certain stringent conditions on the flows on the boundary of the concentration space are satisfied. The sets of critical points that are found for stable and unstable oscillations, and for competitive exclusion, represent the simplest sets of critical points that satisfy the topological theorem. The restrictions that are imposed on bifurcations of the dynamics are discussed.

Keywords: qualitative dynamics, bifurcation theory, competitive exclusion, nonlinear oscillation

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Levins R. Discussion paper: the qualitative analysis of partially specified systems. Ann N Y Acad Sci. 1974;231(1):123–138. doi: 10.1111/j.1749-6632.1974.tb20562.x. [DOI] [PubMed] [Google Scholar]

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