X. Qi

activity

20102026

most citedPositive finite rank elementary operators and characterizing entanglement of states

34 citations · 151 across the 29 of their papers we have counts for

collaborators

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2 papers · 1 filter

math.FA2026

Ascent and descent of bounded linear operators

Xiaofei Qi, Xiaoshuo Feng, Bing Xu +1

Let $B (X)$ be the algebra of all bounded linear operators on a real or complex Banach space $X$ with $dim X \geq 3$ . In this paper, we first exp…

math.OA2026

Algebraic Maximal Numerical Range and its preservers of Triple Products on $C^{*}$ -Algebras

Yongqi Fan, Xiaofei Qi, Jinchuan Hou

Let $A$ and $B$ be unital $C^{*}$ -algebras, and let $V_{0} (a) = {f (a) : f \in S (A), f (a^{*} a) = ∥ a ∥^{2}}$ be the algebraic maximal numerical range of $a\…

Ascent and descent of bounded linear operators

Algebraic Maximal Numerical Range and its preservers of Triple Products on C∗-Algebras

Algebraic Maximal Numerical Range and its preservers of Triple Products on $C^{*}$ -Algebras