@Article{AAMM-3-401,
author = {Xing , Xiaoqing and Chen , Yanping},
title = {Superconvergence of Mixed Methods for Optimal Control Problems Governed by Parabolic Equations},
journal = {Advances in Applied Mathematics and Mechanics},
year = {2011},
volume = {3},
number = {4},
pages = {401--419},
abstract = {<p style="text-align: justify;">In this paper, we investigate the superconvergence results for
optimal control problems governed by parabolic equations with
semi-discrete mixed finite element approximation. We use the lowest
order mixed finite element spaces to discrete the state and costate
variables while use piecewise constant function to discrete the
control variable. Superconvergence estimates for both the state
variable and its gradient variable are obtained.</p>},
issn = {2075-1354},
doi = {https://doi.org/10.4208/aamm.10-m1006},
url = {http://global-sci.org/intro/article_detail/aamm/176.html}
}