%0 Journal Article
%T A note on the instability of evolution processes
%A S. R mnean u
%J ACTA MATHEMATICA 
UNIVERSITATIS COMENIANAE
%D 2012
%I Acta Mathematica Universitatis Comenianae
%X In this paper we obtain a Perron type characterization for the expansiveness of an evolution process in Banach spaces.
%K Evolution process
%K exponential instability
%K exponential expansiveness.
%U http://www.emis.de/journals/AMUC/_vol-81/_no_1/_ramneantu/ramneantu.html