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Denjoy's theorem with exponents
Authors:Alec Norton
Institution:Department of Mathematics, University of Texas, Austin, Texas 78712
Abstract:If $X$ is the (unique) minimal set for a $C^{1+\alpha }$ diffeomorphism of the circle without periodic orbits, $0<\alpha <1$, then the upper box dimension of $X$ is at least $\alpha$. The method of proof is to introduce the exponent $\alpha $ into the proof of Denjoy's theorem.

Keywords:Box dimension  minimal sets  Cantor sets  circle diffeomorphisms
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