New construction and ultraconvergence of derivative recovery operator for odd-degree rectangular elements  

作　　者：ZHU Qiding MENG Lingxiong 

机构地区：[1]College of Mathematics and Computer Science,Hunan Normal University,Changsha 410081,China

出　　处：《Science China Mathematics》2004年第6期940-949,共10页中国科学：数学（英文版）

摘　　要：In this paper the ultra convergence of the derivative for odd-degree rectangular elements is addressed. A new, discrete least-squares patch recovery technique is proposed to postprocess the solution derivatives. Such recovered derivatives are shown to possess ultra convergence by using projection type interpolation.

关 键 词：SPR derivative recovery operator projection type interpolation ULTRACONVERGENCE 

分 类 号：N[自然科学总论]