About this article
Published Online: Dec 11, 2014
Page range: 17 - 27
Received: Jul 29, 2014
Accepted: Sep 20, 2014
DOI: https://doi.org/10.2478/awutm-2014-0002
© Annals of West University of Timisoara - Mathematics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
The paper considers a concept of exponential trichotomy for cocycles over semiflows in Banach spaces and as a particular case the corresponding dichotomy concept. Our main objective is to give a characterization of exponential trichotomy for a cocycle over a semiflow in terms of exponential dichotomy of two associated cocycles over the same semi ow.