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Structurally stable heteroclinic cycles. (English) Zbl 0645.58022
An example of a new phenomenon appearing in the dynamical systems theory is given: an open set of topologically equivalent vector fields in the space of those on $$R^ 3$$ equivariant with respect to a certain finite (symmetry) subgroup of O(3) is introduced such that every element of this set has a heteroclinic cycle being an attractor.
Two theorems are presented. The first deals with the fact that such heteroclinic cycles consist of three equilibrium points and three trajectories joining them, while the second describes the situation how one-parameter families of the equivariant vector fields mentioned undergo bifurcation.
Reviewer: J.Andres

MSC:
 37J99 Dynamical aspects of finite-dimensional Hamiltonian and Lagrangian systems 37G15 Bifurcations of limit cycles and periodic orbits in dynamical systems
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References:
 [1] Guckenheimer, Nonlinear Oscillations, Dynamical Systems and Bifurcations of Vector Fields (1983) · Zbl 0515.34001 · doi:10.1007/978-1-4612-1140-2 [2] Armbruster, Physica D [3] DOI: 10.1126/science.208.4440.173 · doi:10.1126/science.208.4440.173
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