DATE2026.06.09 #Awards & Prizes

Professor Toshiyuki Kobayashi received the 67th Fujihara Award

Professor Toshiyuki Kobayashi

We would like to extend our heartfelt congratulations to Professor Toshiyuki Kobayashi of the Graduate School of Mathematical Sciences, The University of Tokyo, on receiving the 67th Fujihara Award.

The Fujihara Award is one of the most prestigious honors in Japan, presented to researchers who have made original and outstanding contributions in the natural sciences. In mathematics, it has been awarded to such internationally distinguished scholars as Professors Shigefumi Mori, Masaki Kashiwara, and Kenji Fukaya. Professor Kobayashi’s receipt of this award is especially significant for our community: it is the first such honor for a faculty member of the Graduate School of Mathematical Sciences since its establishment in 1992, and the first for the Department of Mathematics of the University of Tokyo since Professor Kunihiko Kodaira in 1975 as professor emeritus.

Professor Kobayashi has opened up new frontiers across geometry, Lie theory, representation theory, and analysis. His pioneering work on discontinuous groups beyond the Riemannian setting, symmetry breaking in infinite-dimensional representation theory, global analysis of minimal representations, and multiplicity-free representations through visible actions has had a profound influence on modern mathematics.

This award is a fitting recognition of Professor Kobayashi’s long-standing, sincere, and creative research achievements. We share great joy in this distinguished honor and sincerely wish him continued health and success.

（Written by: Professor Keiji Oguiso, Graduate School of Mathematical Sciences）