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math.FA2024
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…
math.SP2024★ 2 cited
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…