2-Regularity and 2-Normality Conditions for Systems With Impulsive Controls
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Arrow-type sufficient conditions for optimality of age-structured control problems
Vladimir Krastev (2013)
Open Mathematics
We consider a class of age-structured control problems with nonlocal dynamics and boundary conditions. For these problems we suggest Arrow-type sufficient conditions for optimality of problems defined on finite as well as infinite time intervals. We examine some models as illustrations (optimal education and optimal offence control problems).
Explicit Construction of Piecewise Affine Mappings with Constraints
Waldemar Pompe (2010)
Bulletin of the Polish Academy of Sciences. Mathematics
We construct explicitly piecewise affine mappings u:ℝ ⁿ → ℝ ⁿ with affine boundary data satisfying the constraint div u = 0. As an application of the construction we give short and direct proofs of the main approximation lemmas with constraints in convex integration theory. Our approach provides direct proofs avoiding approximation by smooth mappings and works in all dimensions n ≥ 2. After a slight modification of our construction, the constraint div u = 0 can be turned into det Du = 1, giving...
Global optimality conditions for a dynamic blocking problem
Alberto Bressan, Tao Wang (2012)
ESAIM: Control, Optimisation and Calculus of Variations
The paper is concerned with a class of optimal blocking problems in the plane. We consider a time dependent set R(t) ⊂ ℝ2, described as the reachable set for a differential inclusion. To restrict its growth, a barrier Γ can be constructed, in real time. This is a one-dimensional rectifiable set which blocks the trajectories of the differential inclusion. In this paper we introduce a definition of “regular strategy”, based on a careful classification of blocking arcs. Moreover, we derive local and...
Global optimality conditions for a dynamic blocking problem
Alberto Bressan, Tao Wang (2012)
ESAIM: Control, Optimisation and Calculus of Variations
The paper is concerned with a class of optimal blocking problems in the plane. We consider a time dependent set R(t) ⊂ ℝ2, described as the reachable set for a differential inclusion. To restrict its growth, a barrier Γ can be constructed, in real time. This is a one-dimensional rectifiable set which blocks the trajectories of the differential inclusion. In this paper we introduce a definition of “regular strategy”, based on a careful classification...
Nonlinear dynamic systems and optimal control problems on time scales
Yunfei Peng, Xiaoling Xiang, Yang Jiang (2011)
ESAIM: Control, Optimisation and Calculus of Variations
This paper is mainly concerned with a class of optimal control problems of systems governed by the nonlinear dynamic systems on time scales. Introducing the reasonable weak solution of nonlinear dynamic systems, the existence of the weak solution for the nonlinear dynamic systems on time scales and its properties are presented. Discussing L1-strong-weak lower semicontinuity of integral functional, we give sufficient conditions for the existence of optimal controls. Using integration by parts formula...
Nonlinear dynamic systems and optimal control problems on time scales*
Yunfei Peng, Xiaoling Xiang, Yang Jiang (2011)
ESAIM: Control, Optimisation and Calculus of Variations
This paper is mainly concerned with a class of optimal control problems of systems governed by the nonlinear dynamic systems on time scales. Introducing the reasonable weak solution of nonlinear dynamic systems, the existence of the weak solution for the nonlinear dynamic systems on time scales and its properties are presented. Discussing L1-strong-weak lower semicontinuity of integral functional, we give sufficient conditions for the existence of optimal controls. Using integration by parts formula...
On a necessary condition in the calculus of variations in Sobolev spaces with variable exponent
Elhoussine Azroul, Meryem El Lekhlifi, Badr Lahmi, Abdelfattah Touzani (2014)
Applicationes Mathematicae
We prove an approximation theorem in generalized Sobolev spaces with variable exponent and we give an application of this approximation result to a necessary condition in the calculus of variations.
Time-optimal control of systems with fractional dynamics.
Tricaud, Christophe, Chen, Yangquan (2010)
International Journal of Differential Equations
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