Uniform superapproximation of the derivative of tetrahedral quadratic finite element approximation

被引：3
|
作者：
Liu, JH [1 ]
Zhu, QD
机构：
[1] Hunan Univ, Inst Appl Math, Changsha 410082, Peoples R China
[2] Hunan Normal Univ, Sch Math & Comp Sci, Changsha 410081, Peoples R China
来源：
JOURNAL OF COMPUTATIONAL MATHEMATICS | 2005年 / 23卷 / 01期
关键词：
tetrahedron; superapproximation; finite element;
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper,we will prove the derivative of tetrahedral quadratic finite element approximation is superapproximate to the derivative of the quadratic Lagrange interpolant of the exact solution in the L-infinity-norm, which can be used to enhance the accuracy of the derivative of tetrahedral quadratic finite element approximation to the derivative of the exact solution.
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页码：75 / 82
页数：8
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