Daihachiro Sato

Daihachiro Sato
Daihachiro Sato (1932-2008)
Born	June 1, 1932 Fujinomiya, Shizuoka, Japan
Died	May 28, 2008 (age 75) Ladner, British Columbia, Canada
Residence	Canada
Citizenship	Japanese
Nationality	Japanese
Fields	Mathematician
Institutions	University of Regina Tokyo University of Social Welfare
Alma mater	Tokyo University of Education University of California, Los Angeles
Doctoral advisor	Ernst G. Straus
Known for	Diophantine Representation of Prime Numbers

Daihachiro Sato (June 1, 1932 – May 28, 2008) was a Japanese mathematician who was awarded the Lester R. Ford Award in 1976 for his work in number theory, specifically on his work in the Diophantine representation of prime numbers. His doctoral supervisor at the University of California, Los Angeles was Ernst G. Straus. It is due to this extensive collaboration with Straus that Sato has an Erdős number as well as an Einstein number of 2.

Sato was an only child born in Fujinomiya, Shizuoka, Japan on June 1, 1932. While still attending high school, Sato published his first mathematics research paper, which led to his acceptance at the Tokyo University of Education. There, Sato earned a B.S. in theoretical physics, a popular academic field at the time due to the recent Nobel Prize in Physics awarded to Sin-Itiro Tomonaga, a professor at this university.

Following his undergraduate degree in Japan, he switched his studies to mathematics, earning a M.Sc. and a Ph.D from UCLA, and eventually became tenured at the University of Saskatchewan, Regina campus in Regina, Saskatchewan, Canada. Following his retirement in 1997 he was granted the position Professor Emeritus at the University of Regina which is what the Regina campus became in 1974. Subsequently, he further taught at the Tokyo University of Social Welfare from 2000 until 2006, after which he returned to Canada. He died at Ladner, British Columbia on May 28, 2008.

Sato's interests included integer valued entire functions, generalized interpolation by analytic functions, prime representing functions, and function theory. It is in the field of prime representing functions that Sato co-authored a paper with James P. Jones, Hideo Wada, and Douglas Wiens entitled "Diophantine Representation of the Set of Prime Numbers", which won them the Lester R. Ford Award in Mathematics in 1976.

Persondata
Name	Sato, Daihachiro
Alternative names
Short description
Date of birth	June 1, 1932
Place of birth	Fujinomiya, Shizuoka, Japan
Date of death	May 28, 2008
Place of death	Ladner, British Columbia, Canada