A computational ball test for the existence of solutions to nonlinear operator equations
SIAM Journal on Numerical Analysis
Iterative solution of nonlinear equations in several variables
Iterative solution of nonlinear equations in several variables
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A STIRLING method for the solution of a system of equations can be viewed as a combination of the method of successive substitution and Newton method. In [Acqu. Math. 12 (1975) 12], the author established the convergence of Stirling method in Banach spaces. In contrast to the point Newton method, the ball Newton method, developed in [SIAM J. Numer. Anal. 18 (1981) 988] and further modified in [Soochow J. Math. 19 (1993) 199], generates a sequence of n-dimensional balls of diminishing radii with the property that each ball contains the root of the operator in question rather than a new approximating point. This paper establishes the ball Stirling method in analogy with ball Newton method, as an effective tool for solving various equations.