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Publicado en línea: 11 dic 2014
Páginas: 17 - 27
Recibido: 29 jul 2014
Aceptado: 20 sept 2014
DOI: https://doi.org/10.2478/awutm-2014-0002
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© Annals of West University of Timisoara - Mathematics
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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.