@Article{AAMM-8-1050, author = {Hou , Tianliang and Li , Li}, title = {Error Estimates of Mixed Methods for Optimal Control Problems Governed by General Elliptic Equations}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2018}, volume = {8}, number = {6}, pages = {1050--1071}, abstract = {

In this paper, we investigate the error estimates of mixed finite element methods for optimal control problems governed by general elliptic equations. The state and co-state are approximated by the lowest order Raviart-Thomas mixed finite element spaces and the control variable is approximated by piecewise constant functions. We derive $L^2$ and $H^{-1}$-error estimates both for the control variable and the state variables. Finally, a numerical example is given to demonstrate the theoretical results.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.2014.m807}, url = {http://global-sci.org/intro/article_detail/aamm/12131.html} }