Spectrum of k-quasi-class A_n operators
Spectrum of k-quasi-class A_n operators
In this paper, we introduce a new class of operators, called $k$-quasi-class $A_n$ operators, which is a superclass of class $A$ and a subclass of $(n,k)$-quasiparanormal operators. We will show basic structural properties and some spectral properties of this class of operators. We show that, if $T$ is of $k$-quasi-class …