Sam Buss <sbuss at ucsd.edu> on Wednesday, May 10, 2017 posted this message: > I am very saddened to report the news from his daughter that Gaisi Takeuti > died peacefully today, May 10, in Japan. > > https://list.math.cas.cz/pipermail/proof-complexity/2017-May/000206.html According to Wikipedia, Takeuti was born on January 25, 1926.