%0 Journal Article
%T Abstract
%A Cemil Tunc
%A Ercan Tunc
%J Electronic Journal of Differential Equations
%D 2006
%I Texas State University
%X Our goal in this paper is to obtain sufficient conditions for instability of the zero solution to the non-linear vector differential equation $$ dddot{X}+F(X,dot{X})ddot{X}+G(dot{X})+H(X)=0. $$ An example illustrates the results obtained.
%K Instability
%K Lyapunov's second (or direct) method
%K nonlinear differential equations of third order.
%U http://ejde.math.txstate.edu/Volumes/2006/109/abstr.html