Contact Info
Department of Applied Mathematics
University of Waterloo
Waterloo, Ontario
Canada N2L 3G1
Phone: 519-888-4567, ext. 32700
Fax: 519-746-4319
PDF files require Adobe Acrobat Reader
Microsoft Teams Meeting (AMATH-Grad Students)
William Bell | Applied Math, University of Waterloo
Pseudospectra and Dynamics
This talk will present a basic explanation of pseudospectra, a tool from the perturbation theory of eigenvalues. It is well-known that eigenvalue methods are a handy tool for answering many questions in the study of the asymptotic and local behaviour of dynamical systems. However for many questions, eigenvalue methods fail. In these cases, pseudospectra offer many tools for extending eigenvalue analysis. For instance, transient behaviour is more usefully described by the pseudospectrum than by eigenvalue behaviour. The pseudospectrum also offers insight about when and why eigenvalue methods fail.
We will proceed by introducing exactly what the pseudospectrum is, introducing useful tools for computations, and explaining simple results that can be used by anyone to study the pseudospectrum, namely the Kreiss Matrix Theorems.
Contact Info
Department of Applied Mathematics
University of Waterloo
Waterloo, Ontario
Canada N2L 3G1
Phone: 519-888-4567, ext. 32700
Fax: 519-746-4319
PDF files require Adobe Acrobat Reader
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is co-ordinated within the Office of Indigenous Relations.