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 $p_0(\zeta)=0$ and $p_{j+1}(\zeta)=\zeta p^2_{j}(\zeta)+1$. These polynomials give rise to a novel family of recursively constructed zero-one matrices whose eigenvalues are the roots of $p_k(\zeta)$. 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. |
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