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- W4226069354 abstract "We propose and analyze a posteriori error estimators for an optimal control problem that involves an elliptic partial differential equation as state equation and a control variable that enters the state equation as a coefficient; pointwise constraints on the control variable are considered as well. We consider two different strategies to approximate optimal variables: a fully discrete scheme in which the admissible control set is discretized with piecewise constant functions and a semi-discrete scheme where the admissible control set is not discretized; the latter scheme being based on the so-called variational discretization approach. We design, for each solution technique, an a posteriori error estimator and show, in two and three dimensional Lipschitz polygonal/polyhedral domains (not necessarily convex), that the proposed error estimator is reliable and efficient. We design, based on the devised estimators, adaptive strategies that deliver optimal experimental rates of convergence for the performed numerical examples." @default.
- W4226069354 created "2022-05-05" @default.
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- W4226069354 date "2022-03-29" @default.
- W4226069354 modified "2023-10-14" @default.
- W4226069354 title "A posteriori error estimates for an optimal control problem with a bilinear state equation" @default.
- W4226069354 doi "https://doi.org/10.48550/arxiv.2203.16036" @default.
- W4226069354 hasPublicationYear "2022" @default.
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