Finite-difference method for singular nonlinear systems

  • Sandra Buhmiler
  • Sanja Rapajić
  • Slavica Medić
  • Tatjana Grbić
Original Paper
  • 54 Downloads

Abstract

This paper presents a method for solving nonlinear system with singular Jacobian at the solution. The convergence rate in the case of singularity deteriorates and one way to accelerate convergence is to form bordered system. A local algorithm, with finite-difference approximations, for forming and solving such system is proposed in this paper. To overcome the need that initial approximation has to be very close to the solution, we also propose a method which is a combination of descent method with finite-differences and local algorithm. Some numerical results obtained on relevant examples are presented.

Keywords

Singular nonlinear system Bordered system Rank deficiency Finite-difference approximation 

Mathematics Subject Classification (2010)

65H10 

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Sandra Buhmiler
    • 1
  • Sanja Rapajić
    • 2
  • Slavica Medić
    • 1
  • Tatjana Grbić
    • 1
  1. 1.Faculty of Technical Sciences, Department of Fundamental SciencesUniversity of Novi SadNovi SadSerbia
  2. 2.Faculty of Sciences, Department of Mathematics and InformaticsUniversity of Novi SadNovi SadSerbia

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