General Study of Iterative Processes of R-Order at Least Three under Weak Convergence Conditions

M. A. Hernández () and N. Romero ()
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M. A. Hernández: University of La Rioja
N. Romero: University of La Rioja

Journal of Optimization Theory and Applications, 2007, vol. 133, issue 2, No 3, 163-177

Abstract: Abstract We consider a family of Newton-type iterative processes solving nonlinear equations in Banach spaces, that generalizes the usually iterative methods of R-order at least three. The convergence of this family in Banach spaces is usually studied when the second derivative of the operator involved is Lipschitz continuous and bounded. In this paper, we relax the first condition, assuming that ‖F″(x)−F″(y)‖≤ω(‖x−y‖), where ω is a nondecreasing continuous real function. We prove that the different R-orders of convergence that we can obtain depend on the quasihomogeneity of the function ω. We end the paper by applying the study to some nonlinear integral equations.

Keywords: Newton-type iterative processes; R-Order of convergence; Semilocal convergence (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1007/s10957-007-9197-x

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