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H.B. Keller Colloquium

Monday, February 12, 2024
4:00pm to 5:00pm
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Annenberg 105
The AAA Algorithm For Rational Approximation
Nick Trefethen, Professor, Applied Mathematics, Harvard University,

With the introduction of the AAA algorithm in 2018
(Nakatsukasa-Sete-T., SISC), the computation of rational
approximations changed from a hard problem to an easy one.
We've been exploring the implications of this transformation
ever since.  This talk will review the algorithm and then
present about 15 demonstrations of applications in various areas
including interpolation of missing data, analytic continuation,
analysis of solutions of dynamical systems, Wiener-Hopf and
Riemann-Hilbert problems, function extension, model order reduction,
Dirichlet-to-Neumann maps, and Laplace, Stokes, and Helmholtz

For more information, please contact Narin Seraydarian by phone at (626) 395-6580 or by email at [email protected].