Results 1 to 10 of about 9,895 (146)
Some operator inequalities for unitarily invariant norms
This note aims to present some operator inequalities for unitarily invariant norms. First, a Zhan-type inequality for unitarily invariant norms is given. Moreover, some operator inequalities for the Cauchy–Schwarz type are also established.
Zhao, Jianguo, Wu, Junliang
exaly +4 more sources
Interpolated inequalities for unitarily invariant norms
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mohammad Sababheh
exaly +4 more sources
New proofs on two recent inequalities for unitarily invariant norms
In this short note, we provide alternative proofs for several recent results due to Audenaert (Oper. Matrices 9:475–479, 2015) and Zou (J. Math. Inequal. 10:1119–1122, 2016; Linear Algebra Appl. 552:154–162, 2019).
Junjian Yang, Linzhang Lu
doaj +3 more sources
Unitarily invariant norms on operators
Let $f$ be a symmetric norm on ${\mathbb R}^n$ and let ${\mathcal B}({\mathcal H})$ be the set of all bounded linear operators on a Hilbert space ${\mathcal H}$ of dimension at least $n$. Define a norm on ${\mathcal B}({\mathcal H})$ by $\|A\|_f = f(s_1(A), \dots, s_n(A))$, where $s_k(A) = \inf\{\|A-X\|: X\in {\mathcal B}({\mathcal H}) \hbox{ has rank ...
Chan, Jor-Ting, Li, Chi-Kwong
openaire +3 more sources
A matrix inequality for unitarily invariant norms
. In this paper, we present an inequality of matrix norms, which is a generalization of the inequality shown by Zou [Linear Algebra Appl. 562, 154–162].
Xin Jin, F ng Zhang, Ji li Xu
openaire +2 more sources
A generalization and an application of the arithmetic–geometric mean inequality for the Frobenius norm [PDF]
Recently, Kittaneh and Manasrah (J. Math. Anal. Appl. 361:262–269, 2010) showed a refinement of the arithmetic–geometric mean inequality for the Frobenius norm. In this paper, we shall present a generalization of Kittaneh and Manasrah’s result. Meanwhile,
Xuesha Wu
doaj +2 more sources
On Maps Preserving Unitarily Invariant Norms of the Spectral Geometric Mean
We consider maps on positive definite cones of von Neumann algebras preserving unitarily invariant norms of the spectral geometric means. The main results concern Jordan *-isomorphisms between C*-algebras, and show that they are characterized by the ...
Liguang Wang
exaly +2 more sources
Some inequalities for unitarily invariant norms of matrices [PDF]
This article aims to discuss inequalities involving unitarily invariant norms. We obtain a refinement of the inequality shown by Zhan. Meanwhile, we give an improvement of the inequality presented by Bhatia and Kittaneh for the Hilbert-Schmidt norm ...
Wang Shaoheng, Zou Limin, Jiang Youyi
doaj +3 more sources
Local Lidskii's theorems for unitarily invariant norms [PDF]
arXiv admin note: text overlap with arXiv:1610 ...
Massey, Pedro Gustavo +2 more
openaire +6 more sources
Matrix inequalities for unitarily invariant norms [PDF]
Let Mn be the space of n × n complex matrices. Let λ j(A), j = 1,2, . . . , n, be the eigenvalues of A ∈ Mn repeated according to multiplicity, and |λ(A)| := (|λ1(A)|, |λ2(A)|, . . . , |λn(A)|) with |λ1(A)| 3⁄4 |λ2(A)| 3⁄4 · · · 3⁄4 |λn(A)|.
Jianguo Zhao
openaire +2 more sources

