Geodesic
An a posteriori error analysis of adaptive finite element methods for distributed elliptic control problems with control constraints
Kieweg, Michael ; Iliash, Yuri1 ; Hoppe, Ronald H. W. ; Hintermüller, Michael 
1 Institute of Mathematics, University of Augsburg, 86159 Augsburg, Germany;
ESAIM: Control, Optimisation and Calculus of Variations, Tome 14 (2008) no. 3, pp. 540-560

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We present an a posteriori error analysis of adaptive finite element approximations of distributed control problems for second order elliptic boundary value problems under bound constraints on the control. The error analysis is based on a residual-type a posteriori error estimator that consists of edge and element residuals. Since we do not assume any regularity of the data of the problem, the error analysis further invokes data oscillations. We prove reliability and efficiency of the error estimator and provide a bulk criterion for mesh refinement that also takes into account data oscillations and is realized by a greedy algorithm. A detailed documentation of numerical results for selected test problems illustrates the convergence of the adaptive finite element method.

DOI : 10.1051/cocv:2007057
Classification : 65N30, 65N50, 49K20, 65K10
Keywords: a posteriori error analysis, distributed optimal control problems, control constraints, adaptive finite element methods, residual-type a posteriori error estimators, data oscillations

Kieweg, Michael  ; Iliash, Yuri 1 ; Hoppe, Ronald H. W.  ; Hintermüller, Michael 

1 Institute of Mathematics, University of Augsburg, 86159 Augsburg, Germany; 
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     author = {Kieweg, Michael and Iliash, Yuri and Hoppe, Ronald H. W. and Hinterm\"uller, Michael},
     title = {An a posteriori error analysis of adaptive finite element methods for distributed elliptic control problems with control constraints},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {540--560},
     publisher = {EDP-Sciences},
     volume = {14},
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Kieweg, Michael; Iliash, Yuri; Hoppe, Ronald H. W.; Hintermüller, Michael. An a posteriori error analysis of adaptive finite element methods for distributed elliptic control problems with control constraints. ESAIM: Control, Optimisation and Calculus of Variations, Tome 14 (2008) no. 3, pp. 540-560. doi: 10.1051/cocv:2007057

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