Department of Mathematics, Peking University, Beijing, 100871, China ; Department of Mathematics, Northwestern University, Evanston, Illinois 60208
Abstract:
Like the closing lemma, the connecting lemma is of fundamental importance in dynamical systems. Hayashi recently proved the connecting lemma for stable and unstable manifolds of a hyperbolic invariant set. In this paper, we prove several very general connecting lemmas. We simplify Hayashi's proof and extend the results to more general cases.