Hiroyuki Usami
- Applied Mathematics top 2%
- Computational Theory and Mathematics top 5%
- Numerical Analysis top 5%
- Mathematical Physics top 10%
- Control and Systems Engineering
- Topics
- Nonlinear Differential Equations Analysis (27 papers)Differential Equations and Boundary Problems (21 papers)Differential Equations and Numerical Methods (19 papers)
In The Last Decade
Hiroyuki Usami
38 papers receiving 320 citations
Peers
Comparison fields: 5 of 23
- Applied Mathematics 339
- Computational Theory and Mathematics 170
- Numerical Analysis 143
- Mathematical Physics 56
- Control and Systems Engineering 36
Countries citing papers authored by Hiroyuki Usami
This map shows the geographic impact of Hiroyuki Usami'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 Hiroyuki Usami with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroyuki Usami more than expected).
Fields of papers citing papers by Hiroyuki Usami
This network shows the impact of papers produced by Hiroyuki Usami. 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 Hiroyuki Usami. The network helps show where Hiroyuki Usami may publish in the future.
Co-authorship network of co-authors of Hiroyuki Usami
This figure shows the co-authorship network connecting the top 25 collaborators of Hiroyuki Usami. A scholar is included among the top collaborators of Hiroyuki Usami 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 Hiroyuki Usami. Hiroyuki Usami is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 1 | |
| 2 | 4 | |
| 3 | 2 | |
| 4 | 0 | |
| 5 | 0 | |
| 6 | 0 | |
| 7 | 7 | |
| 8 | ASYMPTOTIC FORMS OF WEAKLY INCREASING POSITIVE SOLUTIONS FOR QUASILINEAR ORDINARY DIFFERENTIAL EQUATIONS | 19 |
| 9 | 0 | |
| 10 | 1 | |
| 11 | 4 | |
| 12 | 1 | |
| 13 | 20 | |
| 14 | 33 | |
| 15 | 6 | |
| 16 | 10 | |
| 17 | 16 | |
| 18 | 4 | |
| 19 | 8 | |
| 20 | On Bounded Positive Entire Solutions of Semilinear Elliptic Equations | 1 |
About Hiroyuki Usami
Hiroyuki Usami is a scholar working on Applied Mathematics, Numerical Analysis and Computational Theory and Mathematics, having authored 45 papers that have together received 377 indexed citations. Recurring topics across this work include Nonlinear Differential Equations Analysis (27 papers), Differential Equations and Boundary Problems (21 papers) and Differential Equations and Numerical Methods (19 papers). The work is most often cited by research in Applied Mathematics (339 citations), Numerical Analysis (143 citations) and Computational Theory and Mathematics (170 citations). Hiroyuki Usami has collaborated with scholars based in Japan and Canada. Frequent co-authors include Ken‐ichi Kamo, Yūki Naito, Takaŝi Kusano, Manabu Naito, Akio Ogata and Charles A. Swanson. Their work appears in journals such as Journal of Mathematical Analysis and Applications, Archive for Rational Mechanics and Analysis and Journal of Differential Equations.
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.