Per Christian Hansen

137 papers and 16.8k indexed citations i.

About

Per Christian Hansen is a scholar working on Mathematical Physics, Computational Theory and Mathematics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Per Christian Hansen has authored 137 papers receiving a total of 16.8k indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Mathematical Physics, 34 papers in Computational Theory and Mathematics and 25 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Per Christian Hansen’s work include Numerical methods in inverse problems (47 papers), Matrix Theory and Algorithms (32 papers) and Statistical and numerical algorithms (22 papers). Per Christian Hansen is often cited by papers focused on Numerical methods in inverse problems (47 papers), Matrix Theory and Algorithms (32 papers) and Statistical and numerical algorithms (22 papers). Per Christian Hansen collaborates with scholars based in Denmark, United States and Sweden. Per Christian Hansen's co-authors include Dianne P. O’Leary, Gene H. Golub, James G. Nagy, Tony F. Chan, Søren Holdt Jensen, Jakob Sauer Jørgensen, Toke Koldborg Jensen, Ricardo D. Fierro, Tommy Elfving and Misha E. Kilmer and has published in prestigious journals such as Journal of the American Statistical Association, Physical Review B and Journal of Computational Physics.

In The Last Decade

Co-authorship network of co-authors of Per Christian Hansen

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

Fields of papers citing papers by Per Christian Hansen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Per Christian Hansen. 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 Per Christian Hansen. The network helps show where Per Christian Hansen may publish in the future.

Countries citing papers authored by Per Christian Hansen

Since Specialization
Citations

This map shows the geographic impact of Per Christian Hansen'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 Per Christian Hansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Per Christian Hansen 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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2026