In this paper, we introduce the class of (n, mBQ) operators acting on a complex Hilbert space H. An operator if T ∈ B (H) is said to belong to class (n, mBQ) if T ∗2mT 2n commutes with (T ∗mTn ) 2 equivalently [T ∗2mT 2n, (T ∗mTn)2] = 0, for a positive integers n and m. We investigate algebraic properties that this class enjoys. Have. We analyze the relation of this class to (n,m)-power class (Q) operators
AbstractLet A ∈ L(H1), B ∈ L(H2) (where H1, H2 are Hilbert spaces), and let δA, B denote the operato...
Abstract. A Hilbert Space operator T is of class Q if T 2∗T 2 − 2T ∗T + I is nonnegative. Every para...
The aim of this paper is to study, for a given sequence (ρn )n≥1 of complex numbers, the class of Hi...
In this paper, we introduce the class of (BD) operators acting on a complex Hilbert space H. An oper...
Copyright © 2013 Adnan A. S. Jibril. This is an open access article distributed under the Creative C...
ABSTRACT. Duggal-Jeon-Kubrusly([2]) introduced Hilbert space operator T satisfying prop-erty |T |2 ≤...
This paper introduced a new class of operators called (A-n)-potent operator on a complex Hilbert spa...
This paper introduced a new class of operators called (A-n)-potent operator on a complex Hilbert spa...
In this paper, we introduce a new classes of operators acting on a complex Hilbert space H, denoted ...
Abstract Let be a bounded linear operator on a complex Hilbert space . In this paper we introduce a ...
AbstractLet H be a separable infinite-dimensional complex Hilbert space and let A,B∈B(H), where B(H)...
In this paper we characterize Hermitian operators defined on Hilbert space. Using this result we est...
Recall that an operator ∈ () is called (, ) -normal powers operator if and only if ( )∗ = ( )∗ for...
Recall that an operator ∈ is called , -normal powers operator if and only if ∗ = ∗ for so...
AbstractSome familiar classes of stable Hilbert-space operators are studied to determine how they ov...
AbstractLet A ∈ L(H1), B ∈ L(H2) (where H1, H2 are Hilbert spaces), and let δA, B denote the operato...
Abstract. A Hilbert Space operator T is of class Q if T 2∗T 2 − 2T ∗T + I is nonnegative. Every para...
The aim of this paper is to study, for a given sequence (ρn )n≥1 of complex numbers, the class of Hi...
In this paper, we introduce the class of (BD) operators acting on a complex Hilbert space H. An oper...
Copyright © 2013 Adnan A. S. Jibril. This is an open access article distributed under the Creative C...
ABSTRACT. Duggal-Jeon-Kubrusly([2]) introduced Hilbert space operator T satisfying prop-erty |T |2 ≤...
This paper introduced a new class of operators called (A-n)-potent operator on a complex Hilbert spa...
This paper introduced a new class of operators called (A-n)-potent operator on a complex Hilbert spa...
In this paper, we introduce a new classes of operators acting on a complex Hilbert space H, denoted ...
Abstract Let be a bounded linear operator on a complex Hilbert space . In this paper we introduce a ...
AbstractLet H be a separable infinite-dimensional complex Hilbert space and let A,B∈B(H), where B(H)...
In this paper we characterize Hermitian operators defined on Hilbert space. Using this result we est...
Recall that an operator ∈ () is called (, ) -normal powers operator if and only if ( )∗ = ( )∗ for...
Recall that an operator ∈ is called , -normal powers operator if and only if ∗ = ∗ for so...
AbstractSome familiar classes of stable Hilbert-space operators are studied to determine how they ov...
AbstractLet A ∈ L(H1), B ∈ L(H2) (where H1, H2 are Hilbert spaces), and let δA, B denote the operato...
Abstract. A Hilbert Space operator T is of class Q if T 2∗T 2 − 2T ∗T + I is nonnegative. Every para...
The aim of this paper is to study, for a given sequence (ρn )n≥1 of complex numbers, the class of Hi...