%0 Journal Article %A Muñoz-Fernández, Gustavo A. %A Seoane Sepúlveda, Juan Benigno %A Weber, Andreas %T The set of periods of chaotic operators and semigroups %D 2011 %@ 1578-7303 %U https://hdl.handle.net/20.500.14352/42361 %X This expository paper is devoted to the review of some very recent results concerning the set of periods of a chaotic operator T or a chaotic semigroup {T (t): t a parts per thousand yen 0} acting on a complex Banach space. We obtain information about the structure of the set of periods and we give techniques to construct (chaotic) strongly continuous semigroups with prescribed periods. %~