On the solution of equations with nondifferentiable and Ptak error estimates
The author uses Newton's method to approximate the solutions of nonlinear operator equations which involve not necessarily differentiable operators. He obtains error estimates which generalize those of \textit{P. P. Zabrejko} and \textit{D. F. Nguen} [Numer. Funct. Anal. Optimization 9, 671-684 (1987; Zbl 0627.65069)].
scientific article; zbMATH DE number 4199495
scientific article