Abstract
In this paper the essential spectra of closed, densely defined linear operators is characterized on a Banach spaces under perturbations of n-strictly power compact operators. Further we apply the obtained results to investigate the essential spectra of one-dimensional transport equation with general boundary conditions and the essential spectra of singular neutron transport equations in bounded geometries.
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Jeribi, A., Mnif, M. Fredholm Operators, Essential Spectra and Application to Transport Equations. Acta Appl Math 89, 155–176 (2005). https://doi.org/10.1007/s10440-005-9005-2
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DOI: https://doi.org/10.1007/s10440-005-9005-2