Benharrat, Mohammed; Ammar, Aymen; Jeribi, Aref; Messirdi, Bekkai
(Functional Analysis, Approximation and Computation, 2015-02-16)
In this paper, we give some properties of the semi-regular, essentially semi-regular and the
operators of Kato type on a Banach space. We also show that the essentially semi-regular spectrum of
closed, densely defined ...