Charles R. Johnson

About

Charles R. Johnson is a scholar working on Computational Theory and Mathematics, Electrical and Electronic Engineering and Geometry and Topology. According to data from OpenAlex, Charles R. Johnson has authored 425 papers receiving a total of 14.3k indexed citations (citations by other indexed papers that have themselves been cited), including 339 papers in Computational Theory and Mathematics, 184 papers in Electrical and Electronic Engineering and 139 papers in Geometry and Topology. Recurrent topics in Charles R. Johnson’s work include Matrix Theory and Algorithms (303 papers), graph theory and CDMA systems (182 papers) and Graph theory and applications (95 papers). Charles R. Johnson is often cited by papers focused on Matrix Theory and Algorithms (303 papers), graph theory and CDMA systems (182 papers) and Graph theory and applications (95 papers). Charles R. Johnson collaborates with scholars based in United States, Portugal and Canada. Charles R. Johnson's co-authors include Roger A. Horn, António Leal Duarte, Shaun Fallat, Henry Wolkowicz, Eduardo Marques de Sá, Robert Grone, Wayne Barrett, Paul A. Bartlett, Ronald L. Smith and Susana Furtado and has published in prestigious journals such as Nature, Journal of the American Chemical Society and Journal of Medicinal Chemistry.

In The Last Decade

Co-authorship network of co-authors of Charles R. Johnson

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

Fields of papers citing papers by Charles R. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Charles R. Johnson. 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 Charles R. Johnson. The network helps show where Charles R. Johnson may publish in the future.

Countries citing papers authored by Charles R. Johnson

Since Specialization

Citations

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

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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