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arXiv 1908.09145math.NAcs.NA
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非光滑数据下分数阶wave equations的L1方案分析

Analysis of the L1 scheme for fractional wave equations with nonsmooth data

Binjie Li, Tao Wang, Xiaoping Xie

摘要:

本文分析了分数阶波动方程的L1格式。对于非光滑的初始数据,得到了新的稳定性估计,并得到了时间精度$ \mathcal O(τ^{3-α}) $。此外,提出了一种改进的L1格式,并推导了该格式在非光滑初始数据下的稳定性和时间精度$ \mathcal O(τ^2) $。在非齐次情形下,也证明了这两种格式的收敛性。最后,数值实验验证了理论结果。

英文摘要:

This paper analyzes the well-known L1 scheme for fractional wave equations with nonsmooth data. A new stability estimate is obtained, and the temporal accuracy $ \mathcal O(τ^{3-α}) $ is derived for the nonsmooth initial data. In addition, a modified L1 scheme is proposed, and stability and temporal accuracy $ \mathcal O(τ^2) $ are derived for this scheme with nonsmooth initial data. The convergence of the two schemes in the inhomogeneous case is also established. Finally, numerical experiments are performed 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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