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JOURNALS // Sibirskii Zhurnal Vychislitel'noi Matematiki // Archive

Sib. Zh. Vychisl. Mat., 2023 Volume 26, Number 3, Pages 301–312 (Mi sjvm846)

A refinement sum-technique in an iterative scheme adapted for a linear system of integral equations to approach a Fredholm integral equation's solution

M. G. Mahcenea, A. Khellafba, S. Lemitaca, M. Z. Aissaouia

a Laboratory of Applied Mathematics and Modelling (LAMM) University, Guelma, Algeria
b Polytechnic National School of Constantine, Constantine, Algeria
c Higher Normal School of Ouargla, Ouargla, Algeria

Abstract: Based on the use of the geometric series theorem, we transform a linear Fredholm integral equation of the second kind defined on a large interval into an equivalent linear system of Fredholm integral equations of the second kind; then, we inflict a refinement in the way the investigated generalised iterative scheme approximates the sought-after solution. By avoiding to inverse a bounded linear operator, and computing a truncated geometric sum of the former's associated sequence of bounded linear operators instead, we notice that our approach furnishes a better performance in terms of computational time and error efficiency.

Key words: integral equations, bounded linear operators, iterative methods, Nyström method.

MSC: 45B05, 65F10, 65J10

Received: 26.08.2022
Revised: 19.12.2022
Accepted: 10.04.2023

DOI: 10.15372/SJNM20230306



© Steklov Math. Inst. of RAS, 2025