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arXiv 1809.02015math.NAcs.NA
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时间分数阶次扩散问题的间断Galerkin方法的误差估计

Error estimation of a discontinuous Galerkin method for time fractional subdiffusion problems with nonsmooth data

Binjie Li, Hao Luo, Xiaoping Xie

摘要:

本文对时间分数阶次扩散问题的分段常数间断Galerkin方法进行了数值分析。利用变分方法和Mittag-Leffler函数首次建立了弱解的正则性。在低正则性数据下,得到了几种最优误差估计。最后,通过数值实验对理论结果进行了验证.

英文摘要:

This paper is devoted to the numerical analysis of a piecewise constant discontinuous Galerkin method for time fractional subdiffusion problems. The regularity of weak solution is firstly established by using variational approach and Mittag-Leffler function. Then several optimal error estimates are derived with low regularity data. Finally, numerical experiments are conducted to verify the theoretical results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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