M. Amyari

activity

20052020

most citedApproximate Homomorphisms of Ternary Semigroups

56 citations · 56 across the 5 of their papers we have counts for

collaborators

Showing 2020Show all

3 papers · 1 filter

math.FA2020

Some refinements of numerical radius inequalities

Zahra Heydarbeygi, Maryam Amyari, Mahnaz Khanehgir

In this paper, we give some refinements for the second inequality in $\frac{1}{2} ∥ A ∥ \leq w (A) \leq ∥ A ∥$ , where $A \in B (H)$ . In particular, if $A$ is hyponormal by refining the…

math.FA2020

Approximate numerical radius orthogonality

Maryam Amyari, Marzieh Moradian Khibary

We introduce the notion of approximate numerical radius (Birkhoff) orthogonality and investigate its significant properties. Let $T, S \in B (H)$ and $\varepsilon…

math.FA2020

More on $ω$ -orthogonality and $ω$ -parallelism

Maryam Torabian, Maryam Amyari, Marzieh Moradian Khibary

We investigate some aspects of various numerical radius orthogonalities and numerical radius parallelism for bounded linear operators on a Hilbert space $H$ . Among severa…

Some refinements of numerical radius inequalities

Approximate numerical radius orthogonality

More on ω-orthogonality and ω-parallelism

More on $ω$ -orthogonality and $ω$ -parallelism