Contribution on The Intrinsic Ergodicity of the Negative Beta-shift
Abstract
Let β be a real number less than -1. In this paper, we prove the uniqueness of the measure with maximal entropy of the negative β-shift. Endowed with the shift, this symbolic dynamical system is coded under certain conditions, but in all cases, it is shown that the measure with maximal entropy is carried by a support coded by a recurrent positive code. One of the difference between the positive and the negative β-shift is the existence of gaps in the system for certain negative values of β . These are intervals of negative β-representations (cylinders) negligible with respect to the measure with maximal entropy, which is a measure of Champernown.
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