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- A. Rösch
- Optimization Methods and Software
- 2006

An abstract linear-quadratic optimal control problem with pointwise control constraints is investigated. This paper is concerned with the discretization of the control by piecewise linear functions. Under the assumption that the optimal control and the optimal adjoint state are Lipschitz continuous and piecewise of class C 2 an approximation of order h 3/2… (More)

An optimal control problem for a 2-d elliptic equation is investigated with pointwise control constraints. This paper is concerned with discretization of the control by piecewise linear functions. The state and the adjoint state are discretized by linear finite elements. Approximation of order h in the L ∞-norm is proved in the main result.

An optimal control problem for a 2-d elliptic equation is investigated with pointwise control constraints. This paper is concerned with discretization of the control by piecewise linear functions. The state and the adjoint state are discretized by linear finite elements. Approximation of order h in the L ∞-norm is proved in the main result.

- Amanda Roesch
- 2012

By combining both sounds-like operators and compare functions, SAS can quickly identify many intended matches between almost any two strings (I say almost because some typos and spelling mistakes are too drastic to even be caught by the human eye, let alone a computer program relying on logic). First, using the sounds-like (either SOUNDEX or =*) operator,… (More)

- A. Rösch, G. Winkler
- 2014

An optimal control problem for a 2-d elliptic equation is investigated with pointwise control constraints. The domain is assumed to be polygonal but non-convex. The corner singularities are treated by a priori mesh grading. Approximations of the optimal solution of the continuous optimal control problem will be constructed by a projection of the discrete… (More)

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