Abstract
With the classical assumptions on f, a convergence criterion of Newton's method (independent of affine connections) to find zeros of a mapping f from a Lie group to its Lie algebra is established, and estimates of the convergence domains of Newton's method are obtained, which improve the corresponding results in Owren & Welfert (2000, BIT Numer. Math., 40, 121-145) and Wang & Li (2006, J. Zhejiang Univ. Sci. A, 8, 978-986). Applications to optimization are provided and the results due to Mahony (1996, Linear Algebra Appl., 248, 67-89) are extended and improved accordingly.
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