in this article, we discuss measure theoretic characterizations for weighted composition operators in some operator classes on $l^{2}(sigma)$ such as, $n$-power normal, $n$-power quasi-normal, $k$-quasi-paranormal and quasi-class$a$. then we show that weighted composition operators can separate these classes.

In this article, we discuss measure theoretic characterizations for weighted composition operators in some operator classes on $L^{2}(Sigma)$ such as, $n$-power normal, $n$-power quasi-normal, $k$-quasi-paranormal and quasi-class$A$. Then we show that weighted composition operators can separate these classes.

the current study was performed with the aim of investigating the diagnostic utility of bender-gestalt test-ii (bdt-ii) in two groups of patients with major depression and brain-damage, and to compare them with normal individuals. this was a causal-comparative study. major depressive patients (n=30), brain-damaged patients (n=30) and normal subjects (n=30) were compared using bdt-ii in copying,...

We introduce a family of operators called the $k$-quasi-$(n,m)$-power normal operators. Such includes normal, $n$-normal and $(n,m)$-power An operator $T \in {\mathcal B}({\mathcal H})$ is said to be if it satisfies $$T^{*k}\bigg(T^nT^{*m}-T^{*m}T^n\bigg)T^k=0,$$ where $k,n$ $m$ are natural numbers. Firstly, some basic structural properties this established with help special kind matrix represe...