Chao Ko

1.4k total citations · 1 hit paper
2 papers, 825 citations indexed

About

Chao Ko is a scholar working on Geometry and Topology, Computational Theory and Mathematics and Electrical and Electronic Engineering. According to data from OpenAlex, Chao Ko has authored 2 papers receiving a total of 825 indexed citations (citations by other indexed papers that have themselves been cited), including 2 papers in Geometry and Topology, 1 paper in Computational Theory and Mathematics and 1 paper in Electrical and Electronic Engineering. Recurrent topics in Chao Ko's work include Graph theory and applications (2 papers), graph theory and CDMA systems (1 paper) and Advanced Graph Theory Research (1 paper). Chao Ko is often cited by papers focused on Graph theory and applications (2 papers), graph theory and CDMA systems (1 paper) and Advanced Graph Theory Research (1 paper). Chao Ko collaborates with scholars based in Hungary and United Kingdom. Chao Ko's co-authors include Péter L. Erdős, R. Rado, E. J. Cockayne and F. Bruce Shepherd and has published in prestigious journals such as The Quarterly Journal of Mathematics and UVic’s Research and Learning Repository (University of Victoria).

In The Last Decade

Chao Ko

2 papers receiving 753 citations

Hit Papers

INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS 1961 2026 1982 2004 1961 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS
    1961 819 citations Péter L. Erdős, Chao Ko et al. The Quarterly Journal of Mathematics profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Chao Ko Hungary 2 721 514 346 198 71 2 825
D. Hanson Canada 9 301 0.4× 276 0.5× 176 0.5× 73 0.4× 40 0.6× 14 461
T. D. Parsons United States 13 344 0.5× 305 0.6× 208 0.6× 190 1.0× 26 0.4× 32 500
T. Kővári United Kingdom 10 299 0.4× 320 0.6× 245 0.7× 70 0.4× 30 0.4× 16 564
Levon H. Khachatrian Germany 10 372 0.5× 303 0.6× 154 0.4× 185 0.9× 54 0.8× 22 523
Thomas Brylawski United States 10 220 0.3× 307 0.6× 158 0.5× 109 0.6× 106 1.5× 16 506
Vsevolod F. Lev Israel 14 391 0.5× 249 0.5× 196 0.6× 124 0.6× 160 2.3× 69 571
Tom Brylawski United States 11 247 0.3× 233 0.5× 134 0.4× 87 0.4× 116 1.6× 17 387
Gregory A. Freiman Israel 12 266 0.4× 145 0.3× 143 0.4× 80 0.4× 103 1.5× 51 448
Dhruv Mubayi United States 19 1.0k 1.4× 931 1.8× 632 1.8× 277 1.4× 22 0.3× 135 1.2k
Cecil Rousseau United States 16 692 1.0× 691 1.3× 490 1.4× 66 0.3× 18 0.3× 84 786

Countries citing papers authored by Chao Ko

Since Specialization
Citations

This map shows the geographic impact of Chao Ko'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 Chao Ko with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Chao Ko more than expected).

Fields of papers citing papers by Chao Ko

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Chao Ko. 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 Chao Ko. The network helps show where Chao Ko may publish in the future.

Co-authorship network of co-authors of Chao Ko

This figure shows the co-authorship network connecting the top 25 collaborators of Chao Ko. A scholar is included among the top collaborators of Chao Ko 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 Chao Ko. Chao Ko is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

2 of 2 papers shown
1.
Cockayne, E. J., Chao Ko, & F. Bruce Shepherd. (1985). Inequalities concerning dominating sets in graphs. UVic’s Research and Learning Repository (University of Victoria). 6 indexed citations
2.
Erdős, Péter L., Chao Ko, & R. Rado. (1961). INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS. The Quarterly Journal of Mathematics. 12(1). 313–320. 819 indexed citations breakdown →

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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by D. Hanson Breakdown of academic impact, for papers by T. D. Parsons Breakdown of academic impact, for papers by T. Kővári Breakdown of academic impact, for papers by Levon H. Khachatrian Breakdown of academic impact, for papers by Thomas Brylawski Breakdown of academic impact, for papers by Vsevolod F. Lev Breakdown of academic impact, for papers by Tom Brylawski Breakdown of academic impact, for papers by Gregory A. Freiman Breakdown of academic impact, for papers by Dhruv Mubayi Breakdown of academic impact, for papers by Cecil Rousseau
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2026