This map shows the geographic impact of Ryûki Matsuda'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 Ryûki Matsuda with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryûki Matsuda more than expected).
This network shows the impact of papers produced by Ryûki Matsuda. 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 Ryûki Matsuda. The network helps show where Ryûki Matsuda may publish in the future.
Co-authorship network of co-authors of Ryûki Matsuda
This figure shows the co-authorship network connecting the top 25 collaborators of Ryûki Matsuda.
A scholar is included among the top collaborators of Ryûki Matsuda 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 Ryûki Matsuda. Ryûki Matsuda is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Matsuda, Ryûki, et al.. (2004). Idealizers, Complete Integral Closures and Almost Pseudo-valuation Domains. Kyungpook mathematical journal. 44(4). 557–557.4 indexed citations
4.
Matsuda, Ryûki. (2002). NOTE ON THE NUMBER OF SEMISTAR-OPERATIONS, IV. Scientiae mathematicae Japonicae. 55(1). 345–347.3 indexed citations
5.
Matsuda, Ryûki. (2000). NOTE ON THE UNIT GROUP OF R[X;S]. Mathematica japonica. 51(2). 273–277.
6.
Matsuda, Ryûki. (1999). THE MORI-NAGATA THEOREM FOR SEMIGROUPS. Mathematica japonica. 49(1). 17–19.5 indexed citations
7.
Matsuda, Ryûki, et al.. (1999). Note On Kaplansky's Commutative Rings. Project Euclid (Cornell University). 10(1). 31–61.5 indexed citations
Matsuda, Ryûki. (1996). Kronecker function rings of semistar-operations on semigroups. 19. 159–170.3 indexed citations
12.
Matsuda, Ryûki, et al.. (1995). Semistar-operations on integral domains, II. 18. 155–161.20 indexed citations
13.
Matsuda, Ryûki, et al.. (1994). Semistar-operations on integral domains. 17. 1–21.72 indexed citations
14.
Matsuda, Ryûki, et al.. (1993). On an AACDMZ question. Okayama University Scientific Achievement Repository (Okayama University). 35(1). 41–43.7 indexed citations
Matsuda, Ryûki. (1984). On the Content Condition of a Graded Integral Domain. Rikkyo University academic repository (Rikko Roots) (Rikkyo University). 33(1). 79–86.7 indexed citations
18.
Matsuda, Ryûki. (1982). On Kennedy's Problems. Rikkyo University academic repository (Rikko Roots) (Rikkyo University). 31(2). 143–145.7 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.