Collaborators

I am grateful to the collaborators listed below, from whom I have learned a great deal. Our joint papers appear on my publications page, though I have not yet listed some ongoing collaborations. Several of these collaborations are long-standing, and I look forward to continuing our work together.

• Mikihiro Fujii, Nagoya City University [MR Author ID: 1410410]

• Anatole Gaudin, University of Duisburg–Essen [MR Author ID: 1598569]

• Yoshiki Iida, Kyoto University [MR Author ID: 1573807]

• Yoshihiro Shibata, Waseda University [MR Author ID: 196758]

• Tomoki Takahashi, Wakayama National College of Technology [MR Author ID: 1425924]

• Taiki Takeuchi, Kyushu University [MR Author ID: 1448080]

• Patrick Tolksdorf, Karlsruhe Institute of Technology [MR Author ID: 1073920]

I have an Erdős number of 4 (according to MathSciNet as of October 26, 2026): 

Paul Erdős --> J. Marshall Ash --> Russell Murray Brown --> Patrick Tolksdorf --> Keiichi Watanabe

Last updated: October 26, 2026