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Abstract:
In this paper a Multistep Collocation (MC) method for the second kind Fredholm integral equations (FIEs) is proposed and analyzed. The multistep collocation method is applied to FIE with smooth kernels under uniform mesh and weakly singular kernels vertical bar s - t vertical bar(-alpha) (0 < alpha < 1) using a graded mesh then the same convergence rate as collocation method but with a lower degree of freedom is obtained. Moreover, in order to avoid the round-off errors caused by graded mesh, a Hybrid Multistep Collocation (HMC) method by combining multistep collocation and hybrid collocation method is proposed. The HMC method converges faster with lower degrees of freedom and more efficiently captures the weakly singular properties by nonpolynomial interpolation at the first subinterval. The L-infinity-norm convergence results are analysed and proved. Numerical examples are presented to demonstrate the efficiency of the proposed methods. (C) 2021 Elsevier Inc. All rights reserved.
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APPLIED MATHEMATICS AND COMPUTATION
ISSN: 0096-3003
Year: 2022
Volume: 420
4 . 0
JCR@2022
4 . 0 0 0
JCR@2022
ESI Discipline: MATHEMATICS;
ESI HC Threshold:20
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 6
SCOPUS Cited Count: 8
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
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