International Journal of Mathematics and Mathematical Sciences
Volume 2006 (2006), Article ID 23674, 9 pages

A Newton-type method and its application

V. Antony Vijesh and P. V. Subrahmanyam

Department of Mathematics, Indian Institute of Technology Madras, Chennai 600036, India

Received 6 March 2006; Accepted 26 March 2006

Copyright © 2006 V. Antony Vijesh and P. V. Subrahmanyam. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We prove an existence and uniqueness theorem for solving the operator equation F(x)+G(x)=0, where F is a continuous and Gâteaux differentiable operator and the operator G satisfies Lipschitz condition on an open convex subset of a Banach space. As corollaries, a recent theorem of Argyros (2003) and the classical convergence theorem for modified Newton iterates are deduced. We further obtain an existence theorem for a class of nonlinear functional integral equations involving the Urysohn operator.