Error estimates for finite element approximations of elliptic control problems
Walter Alt, Nils Bräutigam, Arnd Rösch (2007)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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We investigate finite element approximations of one-dimensional elliptic control problems. For semidiscretizations and full discretizations with piecewise constant controls we derive error estimates in the maximum norm.