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Conditional intermediate entropy and Birkhoff average properties of hyperbolic flows

Published online by Cambridge University Press:  14 November 2023

XIAOBO HOU
Affiliation:
School of Mathematical Science, Fudan University, Shanghai 200433, PR China (e-mail: 20110180003@fudan.edu.cn)
XUETING TIAN*
Affiliation:
School of Mathematical Science, Fudan University, Shanghai 200433, PR China (e-mail: 20110180003@fudan.edu.cn)

Abstract

Katok [Lyapunov exponents, entropy and periodic points of diffeomorphisms. Publ. Math. Inst. Hautes Études Sci. 51 (1980), 137–173] conjectured that every $C^{2}$ diffeomorphism f on a Riemannian manifold has the intermediate entropy property, that is, for any constant $c \in [0, h_{\mathrm {top}}(f))$, there exists an ergodic measure $\mu $ of f satisfying $h_{\mu }(f)=c$. In this paper, we obtain a conditional intermediate metric entropy property and two conditional intermediate Birkhoff average properties for basic sets of flows that characterize the refined roles of ergodic measures in the invariant ones. In this process, we establish a ‘multi-horseshoe’ entropy-dense property and use it to get the goal combined with conditional variational principles. We also obtain the same result for singular hyperbolic attractors.

Information

Type
Original Article
Copyright
© The Author(s), 2023. Published by Cambridge University Press

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