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arXiv 1806.03421math.NAcs.NA
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Caputo导数的渐近展开与近似

Asymptotic expansions and approximations for the Caputo derivative

University of Forestry(索非亚林业大学);University of Economics, Varna(瓦尔纳经济大学);Institute of Mathematics and Informatics, Bulgarian Academy of Sciences(保加利亚科学院数学与信息学研究所);Institute of Information and Communication Technologies, Bulgarian Academy of Sciences(保加利亚科学院信息与通信技术研究所)

Yuri Dimitrov, Radan Miryanov, Venelin Todorov

AI总结:

本文通过二项式系数的渐近展开和L1近似权重,改进了移位Grünwald-Letnikov差分近似和Caputo导数的L1近似,获得Caputo导数的二阶近似。

摘要:

本文利用二项式系数的渐近展开和L1近似权重,通过修改移位Grünwald-Letnikov差分近似和Caputo导数的L1近似权重,获得Caputo导数的二阶近似。通过改进的移位Grünwald-Letnikov近似,可以得到具有任意初始点解值和一阶导数的二阶数值解。

英文摘要:

In this paper we use the asymptotic expansions of the binomial coefficients and the weights of the L1 approximation to obtain approximations of order $2-α$ and second-order approximations of the Caputo derivative by modifying the weights of the shifted Grünwald-Letnikov difference approximation and the L1 approximation of the Caputo derivative. A modification of the shifted Grünwald-Letnikov approximation is obtained which allows second-order numerical solutions of fractional differential equations with arbitrary values of the solutions and their first derivatives at the initial point.

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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