30 citations · 33 across the 8 of their papers we have counts for
9 papers
On Some Numerical Radius Inequalities for Hilbert Space Operators
Mahdi Ghasvareh, Mohsen Erfanian Omidvar
This article is devoted to studying some new numerical radius inequalities for Hilbert space operators. Our analysis enables us to improve an earlier bound of numerical radius due…
A Note Around Operator Bellman Inequality
Shiva Sheybani, Mohsen Erfanian Omidvar, Mahnaz Khanegir
In this paper, we shall give an extension of operator Bellman inequality. This result is estimated via Kantorovich constant.
A new type of Numerical radius of operators on Hilbert -module
Marzieh Mehrazin, Maryam Amyari, Mohsen Erfanian Omidvar
In this paper, we define a new concept of numerical range and prove its basic results. We also define the numerical radius and prove that $$ω_{o}(T)\l…
New inequalities for operator concave functions involving positive linear maps
S. Sheybani, M. E. Omidvar, H. R. Moradi
The purpose of this paper is to present some general inequalities for operator concave functions which include some known inequalities as a particular case. Among other things, we…
Sharpening Some Classical Numerical Radius Inequalities
H. R. Moradi, M. E. Omidvar, K. Shebrawi
New upper and lower bounds for the numerical radii of Hilbert space operators are given. Among our results, we prove that if is a hypo…
Complementary Inequalities to Improved AM-GM Inequality
H. R. Moradi, M. E. Omidvar
Following an idea of Lin, we prove that if and be two positive operators such that , then \begin{equation*} {{Φ}^{2}}\left( \frac{A+B}{2…