Quasi-fredholm and saphar spectrums for the {\alpha}-times integrated semigroups
Abdelaziz Tajmouati, Abdeslam El Bakkali, Mohamed Ahmed Ould Mohamed Baba, Hamid Boua · arXiv (Cornell University) · 2018
We continue to study $\alpha$-times integrated semigroups. Essentially, we characterize the different spectrums of $\alpha$-times integrated semigroups by the spectrums of their generators. Particulary quasi-Fredholm, Kato, essentially Kato, Saphar and essentially Saphar spectrums.