All I can tell you is that as of April 2004, he was alive and a professor at the Graduate School of Mathematical Sciences in the Department of Mathematical Sciences at the University of Tokyo.
1st century
Richard Borcherds, a British mathematician who won the Field's Medal (a mathematics honor) in 1998, has been officially diagnosed with Asperger's Syndrome. Mathematicians who cannot be diagnosed with it because they are already dead, but have some symptoms, are: Bertrand Russell, British mathematician and philosopher Kurt Gödel, Austrian-American mathematician and philosopher Alan Turing, British mathematician Lewis Carroll, British writer and mathematician Isaac Newton, British mathematician, physicist, and astronomer Srinivasa Ramanujan, Indian mathematician
pythagorus was a mathematician
Mathematician
Yes, George Boole was a mathematician.
1st century
Yukio Takeuchi was born in 1943.
Yukio Jitsukawa was born in 1943.
Yukio Hayashida was born in 1915.
Yukio Yamaji died in 2009.
Yukio Yamaji was born in 1983.
Yukio Kasahara was born in 1888.
Yukio Nishimoto was born in 1920.
Yukio Nishimoto died in 2011.
Yukio Kasaya was born in 1943.
Yukio Ozaki was born in 1859.
Yukio Ozaki died in 1954.