is a Japanese mathematician working in mathematical physics. He is known for his introduction of quantum groups (independently of Vladimir Drinfeld), his contributions to the theory of integrable systems and their correlation functions, and his work with Mikio Sato and Tetsuji Miwa on holonomic quantum fields and isomonodromic deformation theory.
Jimbo was born in Chiba, Japan. He received his bachelor's degree from the University of Tokyo in 1974 and entered graduate study at the Research Institute for Mathematical Sciences (RIMS) at Kyoto University under the supervision of Mikio Sato. He received his master's degree from Kyoto University in 1976 and his doctorate in 1986. Between 1976 and 1988, Jimbo worked as a research associate at RIMS. In 1988 he became an associate professor in the Department of Mathematics at Kyoto University, where he was later promoted to full professor. In 2000 he moved to the University of Tokyo. He is currently a specially appointed professor at Rikkyo University in Tokyo.
In the late 1970s, Jimbo, together with Sato and Miwa, developed the theory of holonomic quantum fields, establishing an unexpected connection between isomonodromic deformation theory for linear differential equations and quantum field theory. This work provided a field-theoretic framework for the correlation functions of the two-dimensional Ising model and led to connections with Painlevé transcendents.
In 1985, Jimbo introduced a q-deformation of the universal enveloping algebra of a simple Lie algebra, independently of Drinfeld's contemporaneous work on Hopf algebras and the quantum YangâÂÂBaxter equation. These structures, now known as quantum groups or DrinfeldâÂÂJimbo algebras, have had far-reaching applications in representation theory, knot theory, and exactly solvable models in statistical mechanics.
Working with Etsurà  Date, Masaki Kashiwara, and Miwa, Jimbo developed the theory of ÃÂ-functions for the KP (KadomtsevâÂÂPetviashvili) integrable hierarchy and related hierarchies, connecting them to the representation theory of infinite-dimensional Lie algebras.
Jimbo has received several major awards for his contributions to mathematical physics, often jointly with his long-time collaborator Tetsuji Miwa: