Physical hyperbolic measure for quotient maps away from the sink basin

Let XX be the vector field under consideration and let YY be a vector field C2C^2 close to XX. Let gYg_Y be the quotient map, let μY\mu_Y denote a candidate physical measure, and let the critical region refer to the region associated with the singular set. Physical-measure conjecture. Similarly to the one-dimensional setting, gYg_Y admits a physical hyperbolic measure μY\mu_Y for all those vector fields YY which are C2C^2 close to XX and for which the stable manifold of the sink does not contain the critical region. Moreover, the basin of μY\mu_Y should be the complement of the stable manifold of the sink. The claim is motivated by expected hyperbolicity away from the critical region and the sink basin, but remains unproved in the stated generality.

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Primary source

V. Araujo, A. Castro, M. J. Pacifico and V. Pinheiro, “Multidimensional Rovella-like attractors”, arXiv:0909.1033 (2011).

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