Block collocation boundary value solutions of the first-kind Volterra integral equations

Block collocation boundary value solutions of the first-kind Volterra integral equations
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第一类Volterra积分方程的块配置边值解

DOI:
10.1007/s11075-020-00917-6
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发表时间:
2020-03
影响因子:
2.1
通讯作者:
Junjie Ma
Junjie Ma
中科院分区:
数学3区
文献类型:
--
作者:
Ling Liu;Junjie Ma

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本文研究了一类第一类Volterra积分方程的块配置边值方法。数值算法是通过在以后的步骤中利用精确解的近似来构造的。即使对于均匀网格,新方法的可解性也不能得到保证。因此,我们通过研究配置方程的特殊结构来讨论其可解性,并给出了配置解存在的充分条件。在此基础上,利用插值余数证明了该算法的收敛性。最后,通过数值实验验证了新边值方法的有效性,并对理论结果进行了验证。
In this paper, we study a class of block collocation boundary value methods for the first-kind Volterra integral equations. The numerical algorithm is constructed by utilizing approximations to the exact solution in future steps. The solvability of the new method is not ensured, even for the uniform mesh. Therefore, we discuss its solvability by studying the special structure of the collocation equation and present the sufficient condition for the existence of the collocation solution. Furthermore, we exploit the convergence property with the help of interpolation remainders. Finally, numerical experiments are conducted to show the effectiveness of the new boundary value method and verify given theoretical results.
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