University of Cambridge > Talks.cam > Applied and Computational Analysis > Spectral inclusions and approximations of finite and infinite banded matrices

  Browse A-Z

Log in

Googledetails Microsoftdetails

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Spectral inclusions and approximations of finite and infinite banded matrices

Download to your calendar using vCal

If you have a question about this talk, please contact Matthew Colbrook .

We derive inclusion sets and approximations to spectrum and pseudospectrum of banded, in general non-normal, matrices of finite or infinite size. In the infinite case (bi- or semi-infinite), the matrix acts as a bounded linear operator on the corresponding l^2 space, and we moreover bound and approximate its essential spectrum.

Our inclusion sets come as unions of pseudospectra of certain submatrices of chosen size. Via this choice, we can balance accuracy against numerical cost. The philosophy is to split one global spectral problem into several local problems of moderate size.

This talk is part of the Applied and Computational Analysis series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

https://cern.zoom.us/j/63171879297?pwd=UVJ5V1Voc1czdDFwK0Nnd0ZWMFJrZz09 ,ec Lecture Room 1, Institute for Manufacturing, West Cambridge

Other talks

Overview of treatment for non-small cell lung cancer Christmas Social Evening & Annual General Meeting Polar Oceans Seminar Talk  Life, death, and the discovery of PDAR: the Pol II Degradation-dependent Apoptotic Response  Dr Dinis Calado, Senior Group Leader, Immunity and Cancer Laboratory, the Francis Crick Institute Alicia Anderson discussing some exciting news about HARPS3
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity