"Kyoto University professor emeritus Heisuke Hironaka (広中 平祐), died on Wednesday. He was 94."
https://www.japantimes.co.jp/news/2026/03/20/japan/heisuke-hironaka-obituary/
Fields-winning mathematician Heisuke Hironaka dies at 94
Specializing in algebraic geometry, the Kyoto University professor emeritus became in 1970 the second Japanese mathematician to win the Fields Medal.
The Japan Times