摘要
TheRitzprojectionsoftheellipticproblem(?)(aij(?)ju)+c0u=finΩ,u=0on(?)Ω,andthequasilineareilipticproblem(?)(ai(x,Du))+a0(x,Du)=0inΩ,u=0on(?)Ωwithlinearfiniteelementsadmitanasymptoticerrorexpansion,respectively,forcertainclassesof“uniform”meshes.ThisprovidesthetheoreticaljustificationfortheuseofRichardsonextrapolationforincreasingtheaccuracyoftheschemefromO(h2)toO(h4|lnh|).
出版日期
1989年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)