M. Kian

activity

20132026

2 \times 2

block matrices of operators

48 citations · 73 across the 25 of their papers we have counts for

collaborators

Showing 2020Show all

3 papers · 1 filter

math.FA2020★ 1 cited

Jointly convex mappings related to the Lieb's functional and Minkowski type operator inequalities

Mohsen Kian, Yuki Seo

Employing the notion of operator log-convexity, we study joint concavity $/$ convexity of multivariable operator functions: $(A, B) \mapsto F (A, B) = h [Φ (f (A)) σ Ψ (g (B))]$ ,…

math.FA2020

Klein's trace inequality and superquadratic trace functions

Mohsen Kian, Mohammad W. Alomari

We show that if $f$ is a non-negative superquadratic function, then $A \mapsto Tr f (A)$ is a superquadratic function on the matrix algebra. In particular, \begin{align*} \tr…

math.FA2020★ 6 cited

Asymmetric Choi--Davis inequalities

Mohsen Kian, M. S. Moslehian, R. Nakamoto

Let $Φ$ be a unital positive linear map and let $A$ be a positive invertible operator. We prove that there exist partial isometries $U$ and $V$ such that \[ |Φ(f(A))Φ(A)Φ(g(A))|\le…