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半线性抛物方程各向异性最低阶R-T混合元超收敛分析 被引量:4

The Superconvergence Analysis of the Lowest Order Anisotropic R-T Element for Semilinear Parabolic Equation
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摘要 利用各向异性判别定理验证了最低阶数R-T混合元具有各向异性特征.利用积分恒等式技巧,得到了R-T元对半线性抛物方程的超逼近性质.通过构造新的插值后处理格式,导出了超收敛结果及后验误差估计. In this paper, anisotropic property of the lowest mixed R-T element is proved by use of anisotropic decision theorem. Based on the integral identitites, the supercloseness of R-T element for semilinear parabolic equation is obtained. Owing to the new interpolation postprocessing technique, the superconvergence and posterior error estimate are derived.
出处 《数学的实践与认识》 CSCD 北大核心 2010年第2期209-217,共9页 Mathematics in Practice and Theory
基金 国家自然科学基金(10671184 10971203) 河南省教育厅自然科学研究计划项目(2008B110018)
关键词 半线性抛物方程 R-T元 各向异性 超逼近与超收敛 semilinear parabolic equation R-T element anisotropy supercloseness and superconvergence posterior error estimate.
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参考文献12

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