Abstract
In this paper, we prove that the accelerated Adomian polynomials formula suggested by Adomian (Nonlinear Stochastic Systems: Theory and Applications to Physics, Kluwer, Dordrecht, 1989) and the accelerated formula suggested by El-Kalla (Int. J. Differ. Equs. Appl. 10(2):225–234, 2005; Appl. Math. E-Notes 7:214–221, 2007) are identically the same. The Kalla-iterates exhibit the same faster convergence exhibited by Adomian’s accelerated iterates with the additional advantage of absence of any derivative terms in the recursion, thereby allowing for ease of computation. Moreover, the formula of El-Kalla is used directly to prove the convergence of the series solution to a class of nonlinear two dimensional integral equations. Convergence analysis is reliable enough to estimate the maximum absolute truncated error of the Adomian series solution.
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El-Kalla, I.L. Error estimates for series solutions to a class of nonlinear integral equations of mixed type. J. Appl. Math. Comput. 38, 341–351 (2012). https://doi.org/10.1007/s12190-011-0482-3
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DOI: https://doi.org/10.1007/s12190-011-0482-3