“This monograph is a good source on the theory of Lyapunov exponents and their applications to fields as ergodic theory, hyperbolic dynamical systems, and multifractal analysis. The book is self-contained and is addressed to researchers of dynamical systems theory, as well as to all interested mathematicians from related fields. … The book contains an extensive bibliography.” (Ivan Podvigin, zbMATH 1407.37001, 2019)“The book gives a good introductionto and an overview of the recent results on the abstract theory of Lyapunov exponents, with a focus on regularity theory. … This book can be read and understood by a novice, while it comprises an overview of some very recent results useful for an expert. It complements well the 'existing literature on Lyapunov exponents, notably on a now-classical theory of nonuniform hyperbolicity and Pesin theory … .” (Sinisa Slijepcevic, Mathematical Reviews, December, 2018)