From the reviews: "The aim of this book is to provide a basis and a survey of the main topics the author's research is devoted to. ... The first and second chapters of the book contain the nonlinear counterpart of the theory for continuous and discrete dynamical systems. ... These two first chapters together with the two appendices conform a textbook for an undergraduate student." (Maite Grau, Zentralblatt MATH, Vol. 1253, 2013)