## The Spring Prize of the Mathematical Society of Japan

The Mathematical Society of Japan

**Spring Prize**is awarded to those of age below 40 who have obtained outstanding mathematical results. This prize has been awarded since 1973 but originally it was named the Iyanaga Prize since it was funded though an endowment made by Shokichi Iyanaga. The Iyanaga Prize was awarded until 1987 and from 1988 it has been known as the Spring Prize.

**Winners of the Iyanaga Prize:**

**1973**Yasutaka Ihara

**1974**Reiko Sakamoto

**1975**Motoo Takahashi

**1976**Mitsuyoshi Kato

**1977**Takahiro Kawai

**1978**Takuro Shintani

**1979**Goro Nishida

**1980**Katsuhiro Shiohama

**1981**Masaki Kashiwara

**1982**Shigeru Iitaka

**1983**Shigefumi Mori

**1984**Yukio Matsumoto

**1985**Toshio Oshima

**1986**Shinichi Kotani

**1987**Toshikazu Sunada

**Winners of the Spring Prize:**

**1988**Kazuya Kato

**1989**Yoichi Miyaoka

**1990**Hiroshi Matano

**1991**Morihiko Saito

**1992**Haruzo Hida

**1993**Shigeo Kusuoka

**1994**Kenji Fukaya

**1995**Mitsuhiro Shishikura

**1996**Shuji Saitou

**1997**Hitoshi Arai

**1998**Tohru Ozawa

**1999**Toshiyuki Kobayashi

**2000**Hiraku Nakajima

**2001**Takeshi Saito

**2002**Yasuyuki Kawahigashi

**2003**Tomotada Ohtsuki

**2004**Takashi Kumagai

**2005**Takeshi Tsuji

**2006**Takuro Mochizuki

**2007**Kenji Nakanishi

**2008**Hideo Takaoka

**2009**Narutaka Ozawa

**2010**Osamu Iyama

**2011**Atsushi Shiho

**2012**Shin-Ichi Ohta

**2013**Masayuki Asaoka

**2014**Yukinobu Toda

**2015**Ken-Ichi Kawarabayashi

**2016**Hiroshi Iritani