摘要
§1.引言考虑二阶椭圆微分算子本征值问题: 求,使其中G是R^N(N=1,2)中边界分段光滑的有界域,a(·,·)是定义在H_0~1(G)上的对称、连续,H_0~1(G)椭圆双线性形式,(·,·)是L_2(G)中内积,||·||_0是L_2(G)中范数。假设满足正则性条件:对fL_2(G),“a(w,v)=(f,v),vH_0~1(G)”
In this paper, a variant of extrapolation for finite element is presented. this variant can be used to improve the accuracy of finite element eigenvalues and eige-nfunctions.
出处
《计算数学》
CSCD
北大核心
1990年第4期357-364,共8页
Mathematica Numerica Sinica
