Qingxiang Xu

activity

20232025

most citedThe Frobenious distances from projections to an idempotent matrix

5 citations · 5 across the 6 of their papers we have counts for

collaborators

Showing 2024Show all

3 papers · 1 filter

math.FA2024

Some aspects of semi-harmonious quasi-projection pairs

Xiaoyi Tian, Qingxiang Xu, Chunhong Fu

A term called the quasi-projection pair $(P, Q)$ was introduced recently by the authors, where $P$ is a projection and $Q$ is an idempotent on a Hilbert $C^{*}$ -module $H$ satisfying…

math.FA2024

Some applications of the matched projections of idempotents

Xiaofeng Zhang, Xiaoyi Tian, Qingxiang Xu

For every idempotent $Q$ on a Hilbert space $H$ , the matched projection $m (Q)$ is a well-established concept. This paper explores several applications of the matched projections. T…

math.FA2024

Some inequalities for adjointable operators on Hilbert $C^{*}$ -modules

Mohammad Sababheh, Hamid Reza Moradi, Qingxiang Xu +1

The main purpose of this paper is, in the general setting of the adjointable operators on Hilbert $C^{*}$ -modules, to develop two new tools that can be applied to deal with the posit…

Some aspects of semi-harmonious quasi-projection pairs

Some applications of the matched projections of idempotents

Some inequalities for adjointable operators on Hilbert C∗-modules

Some inequalities for adjointable operators on Hilbert $C^{*}$ -modules