loading page

Using decomposition of the nonlinear operator for solving non-differentiable problems
  • +1
  • Eva G. Villalba,
  • Miguel Hernandez,
  • Jose Hueso,
  • Eulalia Martínez
Eva G. Villalba
Instituto Universitario de Matemática Multidisciplinar Universitat Politècnica de València València Spain
Author Profile
Miguel Hernandez
Dept of Mathematics and Computation University of La Rioja Logroño Spain
Author Profile
Jose Hueso
Instituto Universitario de Matemática Multidisciplinar Universitat Politècnica de València València Spain
Author Profile
Eulalia Martínez
Instituto Universitario de Matemática Multidisciplinar Universitat Politècnica de València València Spain
Author Profile

Abstract

From decomposition method for operators, we consider Newton-like iterative processes for approximating solutions of nonlinear operators in Banach spaces. These iterative processes maintain the quadratic convergence of Newton's method. Since the operator decomposition method has its highest degree of application in non-differentiable situations, we construct Newton-type methods using symmetric divided differences, which allow us to improve the accessibility of the methods. Experimentally, by studying the basins of attraction of these methods, observe an improvement in the accessibility of derivative-free iterative processes that are normally used in these non-differentiable situations, such as the classic Steffensen's method. In addition, we study both the local and semi-local convergence of the Newton-type methods considered.