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math.SP2016
Local convergence of spectra and pseudospectra
Sabine Bögli
We prove local convergence results for the spectra and pseudospectra of sequences of linear operators acting in different Hilbert spaces and converging in generalised strong resolv…
math.SP2016
Convergence of sequences of linear operators and their spectra
Sabine Bögli
We establish spectral convergence results of approximations of unbounded non-selfadjoint linear operators with compact resolvents by operators that converge in generalized strong r…