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Coexistence for systems governed by difference equations of Lotka-Volterra type
J Hofbauer1, V Hutson, W Jansen
1Institut für Mathematik, Universität Wien, Austria.
Abstract:
The question of the long term survival of species in models governed by Lotka-Volterra difference equations is considered. The criterion used is the biologically realistic one of permanence, that is populations with all initial values positive must eventually all become greater than some fixed positive number. We show that in spite of the complex dynamics associated even with the simplest of such systems, it is possible to obtain readily applicable criteria for permanence in a wide range of cases.
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