We deal with the approximate controllability of control systems governed by delayed semilinear differential equationsy˙(t)=Ay(t)+A1y(t?Δ)+F(t,y(t),yt)+(Bu)(t). Various sufficient conditions for approximate controllability have been obtained; these results usually require some complicated and limited assumptions. Results in this paper provide sufficient conditions for the approximate controllability of a class of delayed semilinear control systems under natural assumptions.
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