4 papers
Localisation of pseudospectra on discrete groups
Simon N. Chandler-Wilde, Marko Lindner, Christian Seifert
In this paper we generalise two of the methods and corresponding results from our previous paper ``On spectral inclusion sets and computing the spectra and pseudospectra of bounded…
Gershgorin-Type Spectral Inclusions for Matrices
Simon N. Chandler-Wilde, Marko Lindner
In this paper we derive sequences of Gershgorin-type inclusion sets for the spectra and pseudospectra of finite matrices. In common with previous generalisations of the classical G…
On Spectral Inclusion Sets and Computing the Spectra and Pseudospectra of Bounded Linear Operators
Simon N. Chandler-Wilde, Ratchanikorn Chonchaiya, Marko Lindner
In this paper we derive novel families of inclusion sets for the spectrum and pseudospectrum of large classes of bounded linear operators, and establish convergence of particular s…
Finite sections: stability, spectral pollution and asymptotics of condition numbers and pseudospectra
Marko Lindner, Dennis Schmeckpeper
The stability of an approximating sequence for an operator usually requires, besides invertibility of , the invertibility of further operators, say , th…