English

Co-compact entropy and its variational principle for non-compact spaces

Dynamical Systems 2013-12-04 v1

Abstract

The purpose of this paper is to generalize the variational principle, which states that the topological entropy is equal to the supremum of the measure theoretical entropies and also the minimum of the metric theoretical entropies, to non-compact dynamical systems by utilizing the co-compact entropy. The equivalence between positive co-compact entropy and the existence of p-horseshoes over the real line is also proved. This implies a system over real line with positive co-compact entropy contains a compact invariant subset.

Keywords

Cite

@article{arxiv.1312.0669,
  title  = {Co-compact entropy and its variational principle for non-compact spaces},
  author = {Zheng Wei and Yangeng Wang and Guo Wei and Zhiming Li and Tonghui Wang},
  journal= {arXiv preprint arXiv:1312.0669},
  year   = {2013}
}

Comments

15 pages. arXiv admin note: text overlap with arXiv:1212.4711

R2 v1 2026-06-22T02:19:25.538Z