Error estimates and superconvergence of mixed finite element for quadratic optimal control. (English) Zbl 1125.49026

Summary: We present an a priori error analysis for mixed finite element approximation of quadratic optimal control problems. Optimal a priori error bounds are obtained. Furthermore super-convergence of the approximation is studied.


49M25 Discrete approximations in optimal control
65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs