Seminar series
Date
Thu, 08 May 2025
Time
12:00 -
12:30
Location
L4
Speaker
Nick Trefethen
Organisation
Harvard University
A beautiful example of a nonlinear eigenvalue problem is the determination of complex eigenvalues for wave scattering. This talk will show how nicely this can be done by applying AAA rational approximation to a scalarized resolvent sampled at a few real frequencies. Even for a domain as elementary as a circle with a gap in it, such computations do not seem to have been done before. This is joint work with Oscar Bruno and Manuel Santana at Caltech.