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Approximating roots of polynomials
(Pontificia Universidad Católica del Perú, 2021-11-27) Torres Romero, Jesús Stefano; Poirier Schmitz, Alfredo Bernardo
This work consists of applying methods of dynamical systems in complex variables to an applied problem: nding the roots of an arbitrary polynomial. Speci cally, we use the iteration z 7! z2 + c to nd the roots of a complex polynomial p(z). By applying that iteration we can use concepts of complex analysis and linear algebra, such as the Mandelbrot set and the Vandermonde matrix to tackle our problem. We see how these ideas have applications in other contexts, such as number theory. We add the discussion of pseudo code and code written in Python 3, for the sake of doing experiments that illustrate the di erent sections of this thesis. This discussion let us analyse the computational complexity of the algorithm on top of the mathematical discussion.