Decay of Correlations by Carlangelo Liverani ABSTRACT: This paper offers a new unified approach for studying statistical properties of hyperbolic dynamical systems. The approach is based on a technique that permits an investigation of the convergence of a semigroup of operators by using an adapted Hilbert metric. An exponential rate of decay of correlations is proven in several classes of examples. PUBLISHED IN: Annals of Mathematics 142, pp. 239-301 (1995).