Topological dynamics indexed by words (Q409662)

Starting with a combinatorial partition theorem for words over an infinite alphabet dominated by a fixed sequence (established recently by the authors), the authors prove recurrence results for topological dynamical systems indexed by such words. In this way the authors extend the classical theory developed by Furstenberg and Weiss of dynamical systems indexed by the natural numbers to systems indexed by words. Moreover, applying this theory to topological systems indexed by semigroups that can be represented as words, the authors get analogous recurrence results for such systems.