Abstract (EN):
We describe a class of vector fields exhibiting abundant switching near a heteroclinic network: for every neighborhood of the network and every infinite admissible path, the set of initial conditions within the neighborhood that follows the path has positive Lebesgue measure. The proof relies on the existence of large strange attractors in the terminology of Broer, Simo, and Tatjer [Nonlinearity, 11 (1998), pp. 667-770] near a heteroclinic tangle unfolding an attracting network with a twodimensional heteroclinic connection. For our class of vector fields, any small nonempty open ball of initial conditions realizes infinite switching. We illustrate the theory with a specific one-parameter family of differential equations, for which we are able to characterize its global dynamics for almost all parameters.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
31