Abstract
We use restricted convergence regions to locate a more precise set than in earlier works containing the iterates of some high-order iterative schemes involving Banach space valued operators. This way the Lipschitz conditions involve tighter constants than before leading to weaker sufficient semilocal convergence criteria, tighter bounds on the error distances and an at least as precise information on the location of the solution. These improvements are obtained under the same computational effort since computing the old Lipschitz constants also requires the computation of the new constants as special cases. The same technique can be used to extend the applicability of other iterative schemes. Numerical examples further validate the new results.
Similar content being viewed by others
References
Amat, S., Bermudez, C., Busquier, S., Legaz, M.J., Plaza, S.: On a family of high-order iterative method under Kantorovich conditions and some Applications, Abstract and Applied Analysis, vol. 2012, Article Id 782170, https://doi.org/10.1155/2012/782170 (2012)
Amat, S., Busquier, S.: Third order iterative methods under Kantorovich conditions. J. Math. Anal. Appl. 336(1), 243–261 (2007)
Amat, S., Busquier, S., Gutirrez, J.M.: An adaptive version of a fourth-order iterative method for quadratic equations. J. Comput. Appl. Math. 191(2), 259–268 (2006)
Argyros, I.K.: Computational theory of iterative methods. In: Chui, C.K., Wuytack, L. (eds.) Series: Studies in Computational Mathematics, vol. 15. Elsevier, New York (2007)
Argyros, I.K.: Improving the order and rates of convergence for the super-Halley method in Banach spaces. Korean J. Comput. Appl. Math. 5(2), 465–474 (1998)
Argyros, I.K.: The convergence of a Halley–Chebysheff-type method under Newton–Kantorovich hypotheses. Appl. Math. Lett. 6(5), 71–74 (1993)
Argyros, I.K., Magréñan, A.A.: Iterative Methods and Their Dynamics with Applications. CRC Press, New York (2017)
Argyros, I.K., George, S., Alberto Magréñan, A.: Local convergence for multi-point-parametric Chebyshev–Halley-type methods of high convergence order. J. Comput. Appl. Math. 282, 215–224 (2015)
Argyros, I.K., George, S., Thapa, N.: Mathematical Modeling for the Solution of Equations and Systems of Equations with Applications. Volume I, ISBN:978-1-53613-361-5, Nova Science Publishers (2018)
Argyros, I.K., George, S., Thapa, N.: Mathematical Modeling for the Solution of Equations and Systems of Equations with Applications, Mathematics Research Developments series, Volume II, ISBN: 978-1-53613-309-7, Nova Science Publishers (2018)
Ezquerro, J.A., Grau-Sanchez, M., Grau, A., Hernandez, M.A., Noguera, M., Romero, N.: On iterative methods with accelerated convergence for solving systems of non-linear equations. J. Optim. Theory Appl. 151(1), 163–174 (2011)
Ezquerro, J.A., Hernandez, M.A.: New Kantorovich-type conditions for Halley’s method. Appl. Numer. Anal. Comput. Math. 2(1), 70–77 (2005)
Hernandez, M.A., Salanova, M.A.: Modification of the Kantorovich assumptions for semilocal convergence of the Chebyshev method. J. Comput. Appl. Math. 126(1–2), 131–143 (2000)
Magréñan, A.A.: A new tool to study real dynamics: the convergence plane. Appl. Math. Comput. 248, 215–225 (2014)
Magréñan, A.A., Argyros, I.K.: Improved convergence analysis for Newton-like methods. Numer. Algor. 71(4), 811–826 (2016). https://doi.org/10.1007/s11075-015-0025-3
Romero, N.: Familias parametricas de procesos iterativos de alto orden de convergencia (Ph.D. thesis), http://dialnet.unirioja.es/(2006)
Traub, J.F.: Iterative methods for the solution of equations, AMS Chelsea Publishing (1982)
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Argyros, I.K., George, S. & Erappa, S.M. Extending the applicability of high-order iterative schemes under Kantorovich hypotheses and restricted convergence regions. Rend. Circ. Mat. Palermo, II. Ser 69, 1107–1113 (2020). https://doi.org/10.1007/s12215-019-00460-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12215-019-00460-x