DISCRETE SUPERCONVERGENCE OF COLLOCATION SOLUTIONS FOR FIRST-KIND VOLTERRA INTEGRAL EQUATIONS

被引:6
作者
Liang, Hui [1 ]
Brunner, Hermann [2 ,3 ]
机构
[1] Heilongjiang Univ, Sch Math Sci, Harbin 150080, Heilongjiang, Peoples R China
[2] Hong Kong Baptist Univ, Dept Math, Kowloon Tong, Hong Kong, Peoples R China
[3] Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
First-kind Volterra integral equations; collocation solutions; piecewise polynomials; superconvergence at non-mesh points; 1ST KIND; APPROXIMATIONS;
D O I
10.1216/JIE-2012-24-3-359
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
It is known that collocation solutions for first-kind Volterra integral equations based on (discontinuous or continuous) piecewise polynomials cannot exhibit local superconvergence at the points of a uniform mesh. In this paper we present a complete analysis of local superconvergence of such collocation solutions for first-kind Volterra integral equations at non-mesh points. In particular, we discuss (i) the existence of superconvergence points for prescribed collocation points; (ii) the existence of collocation points for prescribed superconvergence points. Numerous examples illustrate the theory.
引用
收藏
页码:359 / 391
页数:33
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