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Une méthode générale pour la contrôlabilité exacte en temps minimal. (A general method for minimum time exact controllability). (French) Zbl 0659.49018
The author presents a method to improve the estimates for the time of exact controllability of evolution systems obtained previously by the Hilbert uniqueness method.
Reviewer: O.Carja

93B03 Attainable sets, reachability
49J27 Existence theories for problems in abstract spaces
93B05 Controllability
49J20 Existence theories for optimal control problems involving partial differential equations
35B37 PDE in connection with control problems (MSC2000)
93C20 Control/observation systems governed by partial differential equations
93C25 Control/observation systems in abstract spaces