Chi-Kwong Li

701 total citations
32 papers, 468 citations indexed

About

Chi-Kwong Li is a scholar working on Computational Theory and Mathematics, Algebra and Number Theory and Applied Mathematics. According to data from OpenAlex, Chi-Kwong Li has authored 32 papers receiving a total of 468 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Computational Theory and Mathematics, 14 papers in Algebra and Number Theory and 11 papers in Applied Mathematics. Recurrent topics in Chi-Kwong Li's work include Matrix Theory and Algorithms (22 papers), Advanced Topics in Algebra (14 papers) and Holomorphic and Operator Theory (7 papers). Chi-Kwong Li is often cited by papers focused on Matrix Theory and Algorithms (22 papers), Advanced Topics in Algebra (14 papers) and Holomorphic and Operator Theory (7 papers). Chi-Kwong Li collaborates with scholars based in United States, Hong Kong and Taiwan. Chi-Kwong Li's co-authors include Wing‐Keung Wong, Nung-Sing Sze, Yiu‐Tung Poon, Ren‐Cang Li, Hwa-Long Gau, Zejun Huang, Ilya M. Spitkovsky, Shmuel Friedland, Jianlian Cui and Leiba Rodman and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Economics Letters and Journal of Mathematical Physics.

In The Last Decade

Chi-Kwong Li

31 papers receiving 433 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Chi-Kwong Li United States 11 198 163 114 112 107 32 468
Roger Purves United States 7 101 0.5× 80 0.5× 46 0.4× 117 1.0× 52 0.5× 18 426
Gianni Bosi Italy 12 217 1.1× 29 0.2× 14 0.1× 133 1.2× 24 0.2× 65 415
Azriel Lévy Israel 10 314 1.6× 81 0.5× 32 0.3× 39 0.3× 21 0.2× 33 661
Mathias Beiglböck Austria 14 92 0.5× 18 0.1× 218 1.9× 109 1.0× 204 1.9× 46 582
Valery A. Kalyagin Russia 12 62 0.3× 28 0.2× 26 0.2× 110 1.0× 173 1.6× 38 391
Claude Dellacherie France 10 178 0.9× 24 0.1× 455 4.0× 116 1.0× 208 1.9× 28 1.0k
J. Aczél Canada 3 62 0.3× 20 0.1× 18 0.2× 103 0.9× 86 0.8× 3 390
Mansoor Saburov Malaysia 13 145 0.7× 103 0.6× 45 0.4× 31 0.3× 56 0.5× 76 457
P. A. Meyer France 13 106 0.5× 27 0.2× 246 2.2× 57 0.5× 153 1.4× 45 690
Peter A. Loeb United States 15 263 1.3× 21 0.1× 54 0.5× 137 1.2× 210 2.0× 56 757

Countries citing papers authored by Chi-Kwong Li

Since Specialization
Citations

This map shows the geographic impact of Chi-Kwong Li's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Chi-Kwong Li with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Chi-Kwong Li more than expected).

Fields of papers citing papers by Chi-Kwong Li

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Chi-Kwong Li. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Chi-Kwong Li. The network helps show where Chi-Kwong Li may publish in the future.

Co-authorship network of co-authors of Chi-Kwong Li

This figure shows the co-authorship network connecting the top 25 collaborators of Chi-Kwong Li. A scholar is included among the top collaborators of Chi-Kwong Li based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Chi-Kwong Li. Chi-Kwong Li is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Li, Chi-Kwong, et al.. (2024). Norm of an operator with numerical range in a sector. Linear Algebra and its Applications. 708. 173–192.
2.
Cui, Jianlian, Chi-Kwong Li, & Nung-Sing Sze. (2017). Unitary similarity invariant function preservers of skew products of operators. Journal of Mathematical Analysis and Applications. 454(2). 716–729. 10 indexed citations
3.
Li, Chi-Kwong, et al.. (2016). Optimal bounds on functions of quantum states under quantum channels. Quantum Information and Computation. 16(9&10). 845–861. 1 indexed citations
4.
Gau, Hwa-Long, et al.. (2015). Product of operators and numerical range. Linear and Multilinear Algebra. 64(1). 58–67. 12 indexed citations
5.
Huang, Zejun, et al.. (2014). Graphs associated with matrices over finite fields and their endomorphisms. Linear Algebra and its Applications. 447. 2–25. 22 indexed citations
6.
Li, Chi-Kwong, et al.. (2014). The spectrum of the product of operators, and the product of their numerical ranges. Linear Algebra and its Applications. 469. 487–499. 3 indexed citations
7.
Fošner, Ajda, Zejun Huang, Chi-Kwong Li, Yiu‐Tung Poon, & Nung-Sing Sze. (2013). Linear maps preserving the higher numerical ranges of tensor products of matrices. Linear and Multilinear Algebra. 62(6). 776–791. 8 indexed citations
8.
Fošner, Ajda, Zejun Huang, Chi-Kwong Li, & Nung-Sing Sze. (2013). Linear maps preserving numerical radius of tensor products of matrices. Journal of Mathematical Analysis and Applications. 407(2). 183–189. 7 indexed citations
9.
Li, Chi-Kwong, Yiu‐Tung Poon, & Nung-Sing Sze. (2011). Generalized interlacing inequalities. Linear and Multilinear Algebra. 60(11-12). 1245–1254. 1 indexed citations
10.
Li, Chi-Kwong, et al.. (2011). Linear preservers of tensor product of unitary orbits, and product numerical range. Linear Algebra and its Applications. 438(10). 3797–3803. 10 indexed citations
11.
Li, Chi-Kwong, Yiu‐Tung Poon, & Nung-Sing Sze. (2011). A note on the realignment criterion. Journal of Physics A Mathematical and Theoretical. 44(31). 315304–315304. 8 indexed citations
12.
Li, Chi-Kwong, Yiu‐Tung Poon, & Nung-Sing Sze. (2008). Higher rank numerical ranges and low rank perturbations of quantum channels. Journal of Mathematical Analysis and Applications. 348(2). 843–855. 16 indexed citations
13.
Li, Chi-Kwong, Yiu‐Tung Poon, & Nung-Sing Sze. (2007). Ranks and determinants of the sum of matrices from unitary orbits. Linear and Multilinear Algebra. 56(1-2). 105–130. 8 indexed citations
14.
Gau, Hwa-Long & Chi-Kwong Li. (2007). 𝐶*-isomorphisms, Jordan isomorphisms, and numerical range preserving maps. Proceedings of the American Mathematical Society. 135(9). 2907–2914. 21 indexed citations
15.
Li, Chi-Kwong, et al.. (2006). Mappings preserving spectra of products of matrices. Proceedings of the American Mathematical Society. 135(4). 977–977. 50 indexed citations
16.
Li, Chi-Kwong, Yiu‐Tung Poon, & Nung-Sing Sze. (2004). Isometries for Ky Fan norms between matrix spaces. Proceedings of the American Mathematical Society. 133(2). 369–377. 4 indexed citations
17.
Li, Chi-Kwong, et al.. (2004). Isometries for unitarily invariant norms. Linear Algebra and its Applications. 399. 53–70. 13 indexed citations
18.
Li, Chi-Kwong & Ren‐Cang Li. (2004). A note on eigenvalues of perturbed Hermitian matrices. Linear Algebra and its Applications. 395. 183–190. 31 indexed citations
19.
Li, Chi-Kwong, Leiba Rodman, & Ilya M. Spitkovsky. (2003). On numerical ranges and roots. Journal of Mathematical Analysis and Applications. 282(1). 329–340. 8 indexed citations
20.
Li, Chi-Kwong, et al.. (1998). Equality of higher numerical ranges of matrices and a conjecture of Kippenhahn on Hermitian pencils. Linear Algebra and its Applications. 270(1-3). 323–349. 13 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026