Exact dimensionality of stationary measures for nonuniformly conformally contracting random diffeomorphisms
arXiv.org
Exact dimensionality of stationary measures for nonuniformly conformally contracting random diffeomorphisms
We prove exact dimensionality of ergodic stationary measures for random $C^1$ diffeomorphisms in the single negative Lyapunov scale setting. Let $ν$ be a Borel probability measure on $\mathrm{Diff}^1(M)$ satisfying a logarithmic $C^1$ moment condition, and let $μ$ be a $ν$-stationary ergodic probability measure. If $λ_{\mathrm{top}} = λ_{\mathrm{bot}} = λ<0,$ then $μ$ is exact dimensional and $ \mathrm{dim}(μ)={h_μ^{\mathrm{F}}(ν)}/{(-λ)}.$ No discreteness assumption is imposed on the driving measure.
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