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The linear-quadratic control problem: some recent results and outstanding problems. (English) Zbl 0452.49003


MSC:

49J15 Existence theories for optimal control problems involving ordinary differential equations
49K15 Optimality conditions for problems involving ordinary differential equations
93C05 Linear systems in control theory
49J30 Existence of optimal solutions belonging to restricted classes (Lipschitz controls, bang-bang controls, etc.)
93B25 Algebraic methods
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