Hyperbolic continuation of high-entropy homoclinic classes
Hyperbolic continuation of high-entropy homoclinic classes
Let be a diffeomorphism of a compact surface. For , let be the set of homoclinic classes of measures satisfying . Let converge in the topology. For a homoclinic class of , its hyperbolic continuation under a nearby diffeomorphism is the homoclinic class containing all ergodic hyperbolic measures of homoclinically related to the hyperbolic continuation of a periodic orbit with . Continuation conjecture. Fix . If for all large , then, for all large , each homoclinic class in is the hyperbolic continuation of some homoclinic class in . This conjecture refines upper semicontinuity by asserting that equality of the numbers of high-entropy classes forces every perturbed class to arise by continuation from an original one.
Sources & referencesView supporting material
Primary source
Jérôme Buzzi, Chiyi Luo and Dawei Yang, “Continuity properties of ergodic measures of maximal entropy for C^r surface diffeomorphisms”, arXiv:2412.19658 (2025).
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