@Article{JCM-24-1, author = {Jun Hu and Zhong-Ci Shi}, title = {The Generalized Maximum Angle Condition for the Q1 Isoparametric Element}, journal = {Journal of Computational Mathematics}, year = {2006}, volume = {24}, number = {1}, pages = {1--8}, abstract = {
We consider the quadrilateral $Q$1 isoparametric element and establish an optimal error estimate in $H$1 norm for the interpolation operator under a weaker mesh condition which admits anisotropic quadrilaterals and allows the quadrilateral to become a regular triangle in the sense of maximum angle condition [5,11].
}, issn = {1991-7139}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/jcm/8728.html} }