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Béchir Dali, Mohammed Guediri, Local convergence of the Newton’s method in two step nilpotent Lie groups

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DOI: 10.23952/jnva.6.2022.3.03

Volume 6, Issue 3, 1 June 2022, Pages 199-212

 

Abstract. In this paper, we consider N, a simply connected two-step nilpotent Lie group with \mathcal{N}, its corresponding (two-step nilpotent) Lie algebra, and we study Newton’s method for solving the equation f(x)=0, where f:N\rightarrow \mathcal{N} is a mapping. Under certain generalized Lipschitz condition, we obtain the convergence radius of Newton’s method and the estimation of the uniqueness ball of the zero point of f. Some applications to special cases including Kantorovich’s condition and \gamma-condition are provided. The determination of an approximate zero point of an analytic mapping is also presented.

 

How to Cite this Article:
B. Dali, M. Guediri, Local convergence of the Newton’s method in two step nilpotent Lie groups, J. Nonlinear Var. Anal. 6 (2022), 199-212.