Error estimates for the numerical approximation of boundary semilinear elliptic control problems
(2004)
We study the numerical approximation of boundary optimal control problems governed
by semilinear elliptic partial differential equations with pointwise constraints on the control.
The analysis of the approximate control problems is carried out. The uniform convergence of discretized
controls to optimal controls is proven under natural assumptions by taking piecewise constant
controls. Finally, error estimates are established.