English

Hyperbolic entropy for harmonic measures on singular holomorphic foliations

Dynamical Systems 2025-12-11 v2 Complex Variables

Abstract

Let F=(M,L,E)\mathscr{F}=(M,\mathscr{L},E) be a Brody-hyperbolic singular holomorphic foliation on a compact complex manifold MM. Suppose that F\mathscr{F} has isolated singularities and that its Poincar\'e metric is complete. This is the case for a very large class of singularities, namely, non-degenerate and saddle-nodes in dimension 22. Let μ\mu be an ergodic harmonic measure on F\mathscr{F}. We show that the upper and lower local hyperbolic entropies of μ\mu are leafwise constant almost everywhere. Moreover, we show that the entropy of μ\mu is at least 22.

Keywords

Cite

@article{arxiv.2406.09793,
  title  = {Hyperbolic entropy for harmonic measures on singular holomorphic foliations},
  author = {François Bacher},
  journal= {arXiv preprint arXiv:2406.09793},
  year   = {2025}
}

Comments

Minor changes, some details added to a proof. To appear in Advances in Mathematics

R2 v1 2026-06-28T17:05:38.899Z