高等学校计算数学学报(英文版)
高等學校計算數學學報(英文版)
고등학교계산수학학보(영문판)
MUMERICAL MATHEMATICS A JOURNAL OF CHINESE UNIVERSITIES ENGLISH SERIES
2003年
2期
214-225
,共12页
the least-squares mixed finite element,superconvergence%lowest order,regular families of uniform triangulation,interpolation projection
In this paper,we present the least-squares mixed finite element method and investigate superconvergence phenomena for the second order elliptic boundary-value problems over triangulations.On the basis of the L2-projection and some mixed finite element projections,we obtain the superconvergence result of least-squares mixed finite element solutions.This error estimate indicates an accuracy of O(h3/2)if the lowest order Raviart-Thomas elements are employed.
