Abstract
We show that every subshift factor of the ()-shift is intrinsically ergodic, when and the ()-expansion of 1 is not periodic with odd period. Moreover, the unique measure of maximal entropy satisfies a certain Gibbs property. This is an application of the technique established by Climenhaga and Thompson to prove intrinsic ergodicity for symbolic systems beyond specification. We also prove that there exists a subshift factor of the ()-shift which is not intrinsically ergodic in the cases other than the above.
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