Abstract (EN):
We study the dynamical behaviour of a smooth vector field on a 3-manifold
near a heteroclinic network. Under some generic assumptions on the
network, we prove that every path on the network is followed by a
neighbouring trajectory of the vector field -- there is switching on
the network. We also show that near the network there is an infinite
number of hyperbolic suspended horseshoes. This leads to the existence
of a horseshoe of suspended
horseshoes with the shape of the network.
Our results are motivated by an example constructed by Field (Lectures on Bifurcations, Dynamics, and Symmetry, Pitman Research
Notes in Mathematics Series 356, Longman,1996) where we have observed,
numerically, the existence of such a network.
Language:
Portuguese
Type (Professor's evaluation):
Scientific
No. of pages:
25