The present book relies on various editions of my earlier book "Nonlinear Economic Dynamics," first published in 1989 in the Springer series "Lecture Notes in Economics and Mathematical Systems," and republished in three more, successively revised and expanded editions, as a Springer monograph, in 1991, 1993, and 1997, and in a Russian translation as "Nelineynaia Economicheskaia Dinamica." The first three editions were focused on applications. The last was differ- ent, as it also included some chapters with mathematical background mate- rial -ordinary differential equations and iterated maps...