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math.FA2018
Quasi-Fredholm, Saphar Spectra for Integrated Semigroup
Abdelaziz Tajmouati, Hamid Boua, Mohamed Karmouni
In this paper, we show a spectral inclusion of integrated semigroups for Saphar, essentially Saphar and quasi-Fredholm spectra.
math.FA2018
Semi-Fredholm and semi-Browder spectrums for the -times integrated semigroups
Abdelaziz Tajmouati, Abdeslam El Bakkali, Mohamed Baba Mohamed Ahmed +1
In this paper, we describe the different spectrums of the α-times integrated semigroups by the spectrums of their generators. Specially, essential ascent and descent, upper and low…