@Article{JCM-30-555,
author = {Lingxiong Meng and Zhimin Zhang},
title = {The Ultraconvergence of Eigenvalues for Bi-Quadratic Finite Elements},
journal = {Journal of Computational Mathematics},
year = {2012},
volume = {30},
number = {5},
pages = {555--564},
abstract = {<p style="text-align: justify;">The classical eigenvalue problem of the second-order elliptic operator is approximated with bi-quadratic finite element in this paper. We construct a new superconvergent function recovery operator, from which the $O(h^8|\ln h|^2)$ ultraconvergence of eigenvalue approximation is obtained. Numerical experiments verify the theoretical results.</p>},
issn = {1991-7139},
doi = {https://doi.org/10.4208/jcm.1203-m3977},
url = {http://global-sci.org/intro/article_detail/jcm/8450.html}
}