The positive-entropy stable ergodicity conjecture

Let MM be a compact manifold, let mm denote Lebesgue measure, and let Diffm1(M)\operatorname{Diff}^{1}_{m}(M) be the space of C1C^1 Lebesgue-measure-preserving diffeomorphisms. A diffeomorphism is stably ergodic if every sufficiently close diffeomorphism in the relevant volume-preserving C1C^1 neighborhood is ergodic. Positive-entropy stable ergodicity conjecture. Generically in Diffm1(M)\operatorname{Diff}^{1}_{m}(M), if ff has positive metric entropy with respect to Lebesgue measure, then ff is stably ergodic. The conjecture was originally posed in dimension 33 and is stated here in arbitrary dimension. It was reported as proved in any dimension, so its status is solved.

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Primary source

Gabriel Nuñez and Jana Rodriguez Hertz, “Stable minimality of expanding foliations”, arXiv:1908.09079 (2020).

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