Extending the convergence domain of the Secant and Moser method in Banach Space

We present a new semilocal convergence analysis for the Secant and the Moser method in order to approximate a solution of an equation in a Banach space setting. Using the method of recurrent relations and weaker sufficient convergence criteria than in earlier studies such as Amat et al. (2014), Hernandez and Rubio (2007), Hernandez and Rubio (1999) and Hernandez and Rubio (2002) we increase the convergence domain of these methods. The advantages are also obtained under less computational cost than in Amat et al. (2014), Hernandez and Rubio (2007), Hernandez and Rubio (1999) and Hernandez and Rubio (2002). Numerical examples where the older convergence criteria are not satisfied but the new convergence criteria are satisfied are also provided in this study. (C) 2015 Elsevier B.V. All rights reserved