Resumen de Stability of some essential B-spectra of pencil operators and application

A. Ben Ali, M. Boudhief, Nedra Moalla

• In this paper, we give some results on the essential B-spectra of a linear operator pencil, which are used to determine the essential B-spectra of an integro-differential operator with abstract boundary conditions in the Banach space Lp([−a, a] × [−1, 1]), p ≥ 1 and a > 0.