The 2nd edition of Research.com ranking of the best researchers in the
discipline of Mathematics relies os data
consolidated from various data sources including OpenAlex and
CrossRef. The bibliometric data for evaluating the citation-based metrics were
gathered on 21-12-2022. Position in the ranking is based on a
researcher’s D-index (Discipline H-index), which
takes into account only publications and citation
values for an examined discipline.
The scope of our Mathematics research
Our best scientists ranking is a reliable lineup of leading scholars from the field of Mathematics, based on a detailed analysis of 166,880 researchers discovered from multiple bibliometric data sources. For the field of Mathematics, as many as 6262 researchers were analysed.
What is D-index approval threshold for Mathematics
The D-index threshold for including a researcher to be examined is placed at 30 if the majority of of their publications are in the discipline of Mathematics. The acceptance requirements for scientists to be considered into the ranking of top researchers are based on the D-index, proportion of the publications made within the specific discipline as well as the awards and achievements of the scholars. The D-index threshold for considering top researchers is set as an increment of 10 depending on the total number of scholars estimated for each area od study whilst ensuring that the top 1% of leading researchers are added into the ranking. We expect a proximity of 30% or less between a scientist’s general H-index and their D-index.
Other verification methods
Since our primary goal is to ensure that only genuine scientists are listed in Research.com ranking we realize that raw data are never meant to be a complete tool to evaluate the contributions of scholars. For that reason we manually verify every profile and cross-correlate it against publications in a wide range of reliable sources. Even though it’s not a metric contributing to a researcher’s position in the ranking, the number of papers published in well-known journals and conference proceedings should form a valuable secondary signal of their contribution to research in a selected discipline. Position in the ranking is established using each scientist’s D-index using metrics compiled from OpenAlex and CrossRef, which are the most credible and well-established bibliometric databases of this kind available to the scientific community. A detailed explanation of our research procedures can be found on our methodology page.
Our aim is to motivate scholars, companies and politicians worldwide to investigate where leading experts are heading and to provide a way for the whole scientific community to find out who the leading experts in specific fields of research, in various countries, or even within research institutions are.
Key findings for Mathematics
With 47 scholars Japan ranks in spot 11 globally.
As far as scientific affiliations are concerned, the affiliation with the highest number of leading scholars in Japan is University of Tokyo with 7 scientists affiliated with it being present in the Mathematics ranking. It is followed by Kyoto University with 7 scientists. Ranking thirds is Kyoto University with 4 scientists.
Prominent researchers featured in Japan are representing Rikkyo University, Kyoto University, Kwansei Gakuin University, Tokyo Institute of Technology, University of Tokyo, Chuo University, Tokyo University of Science, Waseda University, Musashino University, The Institute of Statistical Mathematics.
Professor Michio Jimbo from Rikkyo University is highlighted as the best scholar in Japan in our ranking with a D-index of 73. Ranking second in Japan is Tetsuji Miwa from Kyoto University with a D-index of 66. The third spot in Japan is occupied by Masaki Kashiwara from Kyoto University with a D-index of 65.
The average D-index for the top 5% scientists is 69 in comparison to an average of 41 for all 47 scholars included in our ranking.
The average number of published articles in the discipline of Mathematics for the top 3% of researchers in the ranking is 232 against an average of 184 for all 47 scholars.
The average number of citations for the top 10% scholars is 19550 against an average of 10814 for all 47 scholars.