Nung-Sing Sze

activity

20122025

most citedCriteria and new classes of k-positive maps

6 citations · 8 across the 11 of their papers we have counts for

collaborators

Showing math.FAShow all

5 papers · 1 filter

math.FA2024

Characterizations of Strongly Entanglement Breaking channels for infinite-dimensional quantum systems

Bui Ngoc Muoi, Nung-Sing Sze

Entanglement breaking (EB) channels, as completely positive and trace-preserving linear operators, sever the entanglement between the input system and other systems. In the realm o…

math.FA2023

Linear maps preserving (p,k) norms of tensor products of matrices

Zejun Huang, Nung-Sing Sze, Run Zheng

Let $m, n \geq 2$ be integers. Denote by $M_{n}$ the set of $n \times n$ complex matrices. Let $∥ \cdot ∥_{(p, k)}$ be the $(p, k)$ norm on $M_{mn}$ with $1 \leq k \leq mn$ and $2 < p < \infty$ .…

math.FA2022

Jordan product and analytic core preservers

S. Elouazzani, M. Elhodaibi

Let $B (X)$ be the algebra of all bounded linear operators on an infinite-dimensional complex Banach space $X$ . For an operator $T \in B (X)$ , $K (T)$ denotes a…

math.FA2018

The generalized numerical range of a set of matrices

Pan-Shun Lau, Chi-Kwong Li, Yiu-Tung Poon +1

For a given set of $n \times n$ matrices $F$ , we study the union of the $C$ -numerical ranges of the matrices in the set $F$ , denoted by $W_{C} (F)$ . We obt…

math.FA2012

Linear maps preserving Ky Fan norms and Schatten norms of tensor products of matrices

Ajda Fosner, Zejun Huang, Chi-Kwong Li +1

For a positive integer $n$ , let $M_{n}$ be the set of $n \times n$ complex matrices. Suppose $∥ \cdot ∥$ is the Ky Fan $k$ -norm with $1 \leq k \leq mn$ or the Schatten $p$ -norm with $1…