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Mathematics Calendar

October 30, 2012
Tuesday, October 30
Analysis Seminar
Time: 15:30
Speaker: Masoud Khalkhali (Western)
Title: "A new evaluation of zeta values at even integers, II"
Room: MC 108

Abstract: TBA

Graduate Seminar
Time: 17:00
Speaker: Piers Lawrence (UWO Applied Math)
Title: "Mandelbrot Polynomials and Matrices"
Room: MC 108

Abstract: We explore a family of polynomials whose roots are related to the Mandelbrot set. The roots correspond to the k-periodic points of the iteration defining the Mandelbrot set. The Mandelbrot polynomials are defined by p0(ζ)=0 and pj+1(ζ)=ζp2j(ζ)+1. These polynomials give rise to a novel family of recursively constructed zero-one matrices whose eigenvalues are the roots of pk(ζ). The LU decomposition of the resolvent of these matrices is highly structured, and one linear solve can be done in O(n) operations. Krylov based eigenvalue solvers can then be used to compute the eigenvalues of these matrices in an efficient manner.