Abstract
In problems of population genetics, we need to study the evolution of biological systems with respect to time. In many cases, the evolution of a system is described by quadratic mappings of a simplex into itself. As is known, every quadratic stochastic operator of Volterra type given on a finite-dimensional simplex defines a certain tournament. This paper introduces the concept of a homogeneous tournament and studies the stability of fixed points of discrete dynamical systems of Volterra operators corresponding to homogeneous tournaments in the simplex S4.
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