Symbolic extension of $\mathcal{C}^{1,\alpha}$ maps in arbitrary dimensions

Abstract

We prove that every $\mathcal{C}^{1,\alpha}$ self-map of a compact Riemannian manifold, in arbitrary dimension, admits a symbolic extension. This gives a positive answer to the conjecture of Downarowicz and Newhouse in arbitrary dimensions. Our method is based on analyzing the small singular values of the linearized orbit operator.