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arXiv · 1211.5813

The Integration of Three-Dimensional Lotka-Volterra Systems

Robert S. Maier
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Abstract

The general solutions of many three-dimensional Lotka-Volterra systems, previously known to be at least partially integrable, are constructed with the aid of special functions. Examples include certain ABC and May-Leonard systems. The special functions used are incomplete beta and elliptic functions. In some cases the solution is parametric, with the independent and dependent variables expressed as functions of a `new time' variable. This auxiliary variable satisfies a nonlinear third-order differential equation of a generalized Schwarzian type, and results of Carton-LeBrun on such equations are exploited. Several difficult Lotka-Volterra systems are successfully integrated in terms of Painleve transcendents. An appendix on incomplete beta functions is included.

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Robert S. Maier. 2012-11-25. The Integration of Three-Dimensional Lotka-Volterra Systems. https://doi.org/10.1098/rspa.2012.0693

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