Improved generalized differentiability conditions for Newton-like methods

  • Authors:
  • Ioannis K. Argyros;Saïd Hilout

  • Affiliations:
  • Cameron University, Department of Mathematics Sciences, Lawton, OK 73505, USA;Poitiers University, Laboratoire de Mathématiques et Applications, Bd. Pierre et Marie Curie, Téléport 2, B.P. 30179, 86962 Futuroscope Chasseneuil Cedex, France

  • Venue:
  • Journal of Complexity
  • Year:
  • 2010

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Abstract

We provide a semilocal convergence analysis for Newton-like methods using the @w-versions of the famous Newton-Kantorovich theorem (Argyros (2004) [1], Argyros (2007) [3], Kantorovich and Akilov (1982) [13]). In the special case of Newton's method, our results have the following advantages over the corresponding ones (Ezquerro and Hernaandez (2002) [10], Proinov (2010) [17]) under the same information and computational cost: finer error estimates on the distances involved; at least as precise information on the location of the solution, and weaker sufficient convergence conditions. Numerical examples, involving a Chandrasekhar-type nonlinear integral equation as well as a differential equation with Green's kernel are provided in this study.