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Article citations


Lei, T. (1990) Cubic Newton’s Method of Thurston’s Type. Laboratoire de Mathématiques, Ecole Normale Superieure de Lyon. Preprint.

has been cited by the following article:

  • TITLE: Elusive Zeros under Newton’s Method

    AUTHORS: Trevor M. O’Brien, Gareth E. Roberts

    KEYWORDS: Newton’s Method, Complex Dynamical Systems, Mandelbrot-Like Sets, Tricorns

    JOURNAL NAME: Applied Mathematics, Vol.5 No.15, August 19, 2014

    ABSTRACT: Though well-known for its simplicity and efficiency, Newton’s method applied to a complex polynomial can fail quite miserably, even on a relatively large open set of initial guesses. In this work, we present some analytic and numerical results for Newton’s method applied to the complex quartic family where is a parameter. The symmetric location of the roots ofallows for some easy reductions. In particular, when λ is either real or purely imaginary, standard techniques from real dynamical systems theory can be employed for rigorous analysis. Classifying those λ-values where Newton’s method fails on an open set leads to complex and aesthetically intriguing geometry in the λ-parameter plane, complete with fractal-like figures such as Mandelbrot-like sets, tricorns and swallows.