English

Entropy rigidity for foliations by strictly convex projective manifolds

Geometric Topology 2021-09-06 v2

Abstract

Let NN be a compact manifold with a foliation FN\mathscr{F}_N whose leaves are compact strictly convex projective manifolds. Let MM be a compact manifold with a foliation FM\mathscr{F}_M whose leaves are compact hyperbolic manifolds of dimension bigger than or equal to 33. Suppose to have a foliation-preserving homeomorphism f:(N,FN)(M,FM)f:(N,\mathscr{F}_N) \rightarrow (M,\mathscr{F}_M) which is C1C^1-regular when restricted to leaves. In the previous situation there exists a well-defined notion of foliated volume entropies h(N,FN)h(N,\mathscr{F}_N) and h(M,FM)h(M,\mathscr{F}_M) and it holds h(M,FM)h(N,FN)h(M,\mathscr{F}_M) \leq h(N,\mathscr{F}_N). Additionally, if equality holds, then the leaves must be homothetic.

Keywords

Cite

@article{arxiv.2010.04991,
  title  = {Entropy rigidity for foliations by strictly convex projective manifolds},
  author = {Alessio Savini},
  journal= {arXiv preprint arXiv:2010.04991},
  year   = {2021}
}

Comments

11 pages, small changes and some typos corrected, To appear on Pure and Applied Mathematics Quarterly

R2 v1 2026-06-23T19:14:07.394Z