79 citations · 247 across the 24 of their papers we have counts for
6 papers · 1 filter
A-numerical radius and product of semi-Hilbertian operators
Ali Zamani
Let be a positive bounded operator on a Hilbert space . The semi-inner product ${\langle x, y\rangle}_A := \langle Ax, y\ra…
Seminorm and numerical radius inequalities of operators in semi-Hilbertian spaces
M. S. Moslehian, Q. Xu, A. Zamani
Let be a positive bounded operator on a Hilbert space . The semi-inner product ${\langle x, y\rangle}_A := \langle Ax, y\ra…
Numerical radius orthogonality in -algebras
Ali Zamani, Pawel Wojcik
In this paper we characterize the Birkhoff--James orthogonality with respect to the numerical radius norm in -algebras. More precisely, for two elements in a…
Numerical radius inequalities concerning with algebraic norms
A. Zamani, M. S. Moslehian, Q. Xu +1
We give an expression for a generalized numerical radius of Hilbert space operators and then apply it to obtain upper and lower bounds for the generalized numerical radius. We also…
-numerical radius inequalities for semi-Hilbertian space operators
Ali Zamani
Let be a positive bounded operator on a Hilbert space . The semi-inner product ${\langle x, y\rangle}_A := \langle Ax, y\ra…
Birkhoff--James orthogonality of operators in semi-Hilbertian spaces and its applications
Ali Zamani
In this paper, the concept of Birkhoff--James orthogonality of operators on a Hilbert space is generalized when a semi-inner product is considered. More precisely, for linear opera…