Liu, Jinghong; Li, Qiyong; Xiong, Zhiguang; Zhu, Qiding \(L^\infty\)- and \(L^2\)-norms superconvergence of the tetrahedral quadratic finite element. (English) Zbl 07750307 Comput. Math. Appl. 149, 71-74 (2023). MSC: 65N30 65N12 35J25 65N15 35J05 PDFBibTeX XMLCite \textit{J. Liu} et al., Comput. Math. Appl. 149, 71--74 (2023; Zbl 07750307) Full Text: DOI
He, Wen-Ming; Cui, Jun-Zhi; Zhu, Qi-Ding; Wen, Zhong-Liang The local superconvergence of the linear finite element method for the Poisson problem. (English) Zbl 1297.65133 Numer. Methods Partial Differ. Equations 30, No. 3, 930-946 (2014). Reviewer: Ariadna Lucia Pletea (Iaşi) MSC: 65N12 65N30 35J05 65N80 PDFBibTeX XMLCite \textit{W.-M. He} et al., Numer. Methods Partial Differ. Equations 30, No. 3, 930--946 (2014; Zbl 1297.65133) Full Text: DOI
He, Wen-Ming; Chen, Wei-Qiu; Zhu, Qi-Ding Local superconvergence of the derivative for tensor-product block FEM. (English) Zbl 1244.65158 Numer. Methods Partial Differ. Equations 28, No. 2, 457-475 (2012). Reviewer: Nicolae Pop (Baia Mare) MSC: 65N12 65N30 35J05 PDFBibTeX XMLCite \textit{W.-M. He} et al., Numer. Methods Partial Differ. Equations 28, No. 2, 457--475 (2012; Zbl 1244.65158) Full Text: DOI
Liu, Jinghong; Zhu, Qiding Pointwise supercloseness of pentahedral finite elements. (English) Zbl 1204.65135 Numer. Methods Partial Differ. Equations 26, No. 6, 1572-1580 (2010). Reviewer: Jan Lovíšek (Bratislava) MSC: 65N30 65N15 35J05 65N12 PDFBibTeX XMLCite \textit{J. Liu} and \textit{Q. Zhu}, Numer. Methods Partial Differ. Equations 26, No. 6, 1572--1580 (2010; Zbl 1204.65135) Full Text: DOI
Wei, JiDong; Zhu, QiDing Further results on ultraconvergence derivative recovery for odd-order rectangular finite elements. (English) Zbl 1181.65144 Sci. China, Ser. A 52, No. 8, 1671-1684 (2009). Reviewer: Wilhelm Heinrichs (Essen) MSC: 65N30 65N12 35J25 PDFBibTeX XMLCite \textit{J. Wei} and \textit{Q. Zhu}, Sci. China, Ser. A 52, No. 8, 1671--1684 (2009; Zbl 1181.65144) Full Text: DOI
Liu, Jinghong; Zhu, Qiding Maximum-norm superapproach of the gradient for quadratic finite elements in three dimensions. (Chinese. English summary) Zbl 1154.65371 Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 3, 458-466 (2006). MSC: 65N15 35J05 65N12 65N30 PDFBibTeX XMLCite \textit{J. Liu} and \textit{Q. Zhu}, Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 3, 458--466 (2006; Zbl 1154.65371)
Liu, Jinghong; Zhu, Qiding; Zeng, Jinping Pointwise ultraconverse of collocation solutions of boundary value problems. (Chinese. English summary) Zbl 1111.65107 Appl. Math., Ser. A (Chin. Ed.) 21, No. 2, 209-213 (2006). MSC: 65N35 35J05 65N12 PDFBibTeX XMLCite \textit{J. Liu} et al., Appl. Math., Ser. A (Chin. Ed.) 21, No. 2, 209--213 (2006; Zbl 1111.65107)
Zhu, Qiding; Meng, Lingxiong New construction and ultraconvergence of derivative recovery operator for odd-degree rectangular elements. (English) Zbl 1079.65549 Sci. China, Ser. A 47, No. 6, 940-949 (2004). MSC: 65N12 65N30 35J25 PDFBibTeX XMLCite \textit{Q. Zhu} and \textit{L. Meng}, Sci. China, Ser. A 47, No. 6, 940--949 (2004; Zbl 1079.65549)
He, Wenming; Zhu, Qiding Extrapolation of the derivative of the secondary triangular element. (Chinese. English summary) Zbl 0976.65100 Acta Sci. Nat. Univ. Norm. Hunanensis 23, No. 3, 21-25 (2000). MSC: 65N30 65N12 35J05 PDFBibTeX XMLCite \textit{W. He} and \textit{Q. Zhu}, Acta Sci. Nat. Univ. Norm. Hunanensis 23, No. 3, 21--25 (2000; Zbl 0976.65100)
Zhu, Qiding A survey of superconvergence techniques in finite element methods. (English) Zbl 0902.65047 Křížek, M. (ed.) et al., Finite element methods. Superconvergence, post-processing, and a posteriori estimates. 1st conference, University of Jyväskylä, Finland. New York, NY: Marcel Dekker, Inc. Lect. Notes Pure Appl. Math. 196, 287-302 (1998). MSC: 65N12 65N30 35J05 PDFBibTeX XMLCite \textit{Q. Zhu}, Lect. Notes Pure Appl. Math. 196, 287--302 (1998; Zbl 0902.65047)
Cao, Lichun; Zhu, Qiding A completely new kind of finite element and its superconvergence estimate. (Chinese. English summary) Zbl 0727.65085 Nat. Sci. J. Xiangtan Univ. 12, No. 3, 1-8 (1990). MSC: 65N30 65N12 35J05 PDFBibTeX XMLCite \textit{L. Cao} and \textit{Q. Zhu}, Nat. Sci. J. Xiangtan Univ. 12, No. 3, 1--8 (1990; Zbl 0727.65085)