The Sums and Products of Commuting AC-Operators
Mohammad Bagher Ghaemi, Philip G. Spain · DOAJ (DOAJ: Directory of Open Access Journals) · 2007
Abstract: In this paper, we exhibit new conditions for the sum of two commuting AC-operators to be again an AC-operator. In particular, this is satisfied on Hilbert space when one of them is a scalar-type spectral operator.