Recent Advances in Finite Element Methods.

Thomas has also very important contributions to the finite element analysis of optimal control problems in particular to error estimates for Finite element discretizations with boundary control, [[14]]. Keywords: Finite Elements; Optimal Control; Error Estimates; Numerical Analysis; 35J05; 35J25; 35J75; 49M05; 49M25; 49M29; 65M10; 65M12; 65M15; 65M60; 65N12; 65N30 EN Finite Elements Optimal Control Error Estimates Numerical Analysis 35J05 35J25 35J75 49M05 49M25 49M29 65M10 65M12 65M15 65M60 65N12 65N30 813 815 3 10/06/23 20231001 NES 231001 Dedicated to Thomas Apel on the occasion of his 60th birthday This special issue of Computational Methods in Applied Mathematics is dedicated to Thomas Apel on the occasion of his 60th birthday in 2022. Thomas worked also together with Olaf Steinbach on Finite element analysis for optimal control problems, [[20]], and Gabriel Acosta on Raviart-Thomas interpolation on anisotropic tetrahedra, [[1]]. Appl. 52 (2012), no. 1, 3-28. 15 T. Apel, J. Pfefferer and M. Winkler, Local mesh refinement for the discretization of Neumann boundary control problems on polyhedra, Math. [Extracted from the article]