Mostrando ítems 21-30 de 30

    • Local Convergence of the Gauss-Newton Method for Infective-Overdetermined Systems 

      Amat, Sergio; Argyros, Ioannis K; Magreñán, Á. Alberto (Journal of the Korean Mathematical Society, 09/2014)
      We present, under a weak majorant condition, a local convergence analysis for the Gauss-Newton method for injective-overdetermined systems of equations in a Hilbert space setting. Our results provide under the same information ...
    • New improved convergence analysis for Newton-like methods with applications 

      Magreñán, Á. Alberto ; Argyros, Ioannis K; Sicilia, Juan Antonio (Journal of Mathematical Chemistry, 08/2017)
      We present a new semilocal convergence analysis for Newton-like methods using restricted convergence domains in a Banach space setting. The main goal of this study is to expand the applicability of these methods in cases ...
    • On the convergence of inexact two-point Newton-like methods on Banach spaces 

      Argyros, Ioannis K; Magreñán, Á. Alberto (Applied Mathematics and Computation, 08/2015)
      We present a unified convergence analysis of Inexact Newton like methods in order to approximate a locally unique solution of a nonlinear operator equation containing a nondifferentiable term in a Banach space setting. The ...
    • On the local convergence and the dynamics of Chebyshev–Halley methods with six and eight order of convergence 

      Magreñán, Á. Alberto ; Argyros, Ioannis K (Journal of Computational and Applied Mathematics, 05/2016)
      We study the local convergence of Chebyshev–Halley methods with six and eight order of convergence to approximate a locally unique solution of a nonlinear equation. In Sharma (2015) (see Theorem 1, p. 121) the convergence ...
    • Osada method 

      Magreñán, Á. Alberto ; Argyros, Ioannis K (Contemporary study of iterative methods: convergence, dynamics and applications, 2018)
      In this chapter the applicability of the Osada method for solving nonlinear equations is extended. Moreover, some examples are also presented illuminating the theoretical results.
    • Proximal Gauss-Newton method 

      Magreñán, Á. Alberto ; Argyros, Ioannis K (Contemporary study of iterative methods: convergence, dynamics and applications, 2018)
      In this chapter we extend the solvability of penalized nonlinear least squares problems using the proximal Gauss–Newton method. Moreover, a numerical example validating the theoretical results is also presented.
    • Relaxed secant-type methods 

      Argyros, Ioannis K; Magreñán, Á. Alberto (Nonlinear Studies, 06/2014)
      We present a unified local and semilocal convergence analysis for secant-type methods in order to approximate a locally unique solution of a nonlinear equation in a Banach space setting. Our analysis includes the computation ...
    • Study of a high order family: Local convergence and dynamics 

      Amorós, Cristina ; Argyros, Ioannis K; González-Crespo, Rubén ; Magreñán, Á. Alberto; Orcos, Lara ; Sarría, Íñigo (Mathematics, 01/03/2019)
      The study of the dynamics and the analysis of local convergence of an iterative method, when approximating a locally unique solution of a nonlinear equation, is presented in this article. We obtain convergence using a ...
    • Study of local convergence and dynamics of a king-like two-step method with applications 

      Argyros, Ioannis K; Magreñán, Á. Alberto; Moysi, Alejandro; Sarría, Íñigo ; Sicilia, Juan Antonio (Mathematics, 01/07/2020)
      In this paper, we present the local results of the convergence of the two-step King-like method to approximate the solution of nonlinear equations. In this study, we only apply conditions to the first derivative, because ...
    • Unified local convergence for newton's method and uniqueness of the solution of equations under generalized conditions in a Banach space 

      Argyros, Ioannis K; Magreñán, Á. Alberto; Orcos, Lara ; Sarría, Íñigo (Mathematics, 05/2019)
      Under the hypotheses that a function and its Frechet derivative satisfy some generalized Newton-Mysovskii conditions, precise estimates on the radii of the convergence balls of Newton's method, and of the uniqueness ball ...