English

Homoclinic tangencies and singular hyperbolicity for three-dimensional vector fields

Dynamical Systems 2018-09-14 v2

Abstract

We prove that any vector field on a three-dimensional compact manifold can be approximated in the C1-topology by one which is singular hyperbolic or by one which exhibits a homoclinic tangency associated to a regular hyperbolic periodic orbit. This answers a conjecture by Palis. During the proof we obtain several other results with independent interest: a compactification of the rescaled sectional Poincar\'e flow and a generalization of Ma\~n\'e-Pujals-Sambarino theorem for three-dimensional C2 vector fields with singularities.

Keywords

Cite

@article{arxiv.1702.05994,
  title  = {Homoclinic tangencies and singular hyperbolicity for three-dimensional vector fields},
  author = {Sylvain Crovisier and Dawei Yang},
  journal= {arXiv preprint arXiv:1702.05994},
  year   = {2018}
}
R2 v1 2026-06-22T18:23:01.343Z