Gromov's theory of hyperbolic groups have had a big impactin combinatorial group theory and has deep connections withmany branches of mathematics suchdifferential geometry, representation theory, ergodic theory and dynamical systems.This book is an elaboration on some ideas of Gromov onhyperbolic spaces and hyperbolic groups in relation withsymbolic dynamics. Particular attention is paid to thedynamical system defined by the action of a hyperbolic groupon its boundary. The boundary is most oftenchaotic both asa topological space and as a dynamical system, and adescription of this boundary and...

This book results from a pioneering effort to organize a productive interdisciplinary research program on sustainable development policy in a small country not previously recognized as a world leader in environmental social science. The results are very promising, considering the short time frame and the high barriers to success for such an enterprise - differences in concepts and terminology, disciplinary myopia, and the inherent difficulty of the problem. In the USA, where I work, these barriers continue to pose major challenges after some 30 years of effort. Switzerland has made noteworthy...