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Approximate controllability of semilinear neutral systems in Hilbert spaces. (English) Zbl 1052.93009
The authors consider the problem of approximate controllability of semilinear neutral systems in Hilbert spaces. The main tool to handle this is to use the Schauder fixed point theorem. The main result is a sufficient condition for approximate controllability.

MSC:
93B05 Controllability
34K40 Neutral functional-differential equations
93C25 Control/observation systems in abstract spaces
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