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

Sib. Zh. Vychisl. Mat., 2024 Volume 27, Number 1, Pages 11–32 (Mi sjvm858)

Analyzing the semilocal convergence of a fourth-order Newton-type scheme with novel majorant and average Lipschitz conditions

J. P. Jaiswalabc

a Department of Mathematics, Guru Ghasidas Vishwavidyalaya, Bilaspur, C.G., India-495009
b Faculty of Science, Barkatullah University, Bhopal, M.P., India-462026
c Regional Institute of Education, Bhopal, M.P., India-462013

Abstract: The main focus of this paper is an analysis of the semilocal convergence (S.C.) of a three-step Newton-type scheme (TSNTS) used for finding the solution of nonlinear operators in Banach spaces (B.S.). A novel S.C. analysis of the TSNTS is introduced, which is based on the assumption that a generalized Lipschitz condition (G.L.C.) is satisfied by the first derivative of the operator.
The findings contribute to the theoretical understanding of TSNTS in B.S. and have practical implications in various applications, such as integral equations further validating our results.

Key words: semilocal convergence, nonlinear problem, convergence radius, Banach space, generalized Lipschitz condition, $\varkappa$-average.

MSC: 47J25, 47H99, 49M15, 65G99

Received: 30.08.2023
Revised: 20.10.2023
Accepted: 27.10.2023

DOI: 10.15372/SJNM20240102



© Steklov Math. Inst. of RAS, 2024