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Marwa Belghith, Nedra Moalla and Ines Walha
On the essential spectra of unbounded operator matrices with non diagonal domain and an application
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Marwa Belghith
Nedra Moalla
Ines Walha
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47A10
47A53
34K08
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operator matrices
perturbation theory for Fredholm operators
essential spectra
transport operator
perfect periodic boundary conditions
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