William Kahan

William Morton Kahan
Born	(1933-06-05) June 5, 1933 (age 91) Toronto, Ontario, Canada
Nationality	Canadian
Alma mater	University of Toronto
Known for	IEEE 754 Kahan summation algorithm
Awards	Turing Award (1989) IEEE Emanuel R. Piore Award (2000) National Academy of Engineering ACM Fellow
Scientific career
Fields	Mathematics Computer Science
Institutions	University of California, Berkeley
Thesis	Gauss-Seidel Methods Of Solving Large Systems Of Linear Equations (1958)
Doctoral advisor	Byron Alexander Griffith
Doctoral students	James Demmel

William Morton Kahan (born June 5, 1933) is a Canadian mathematician and computer scientist. He received the Turing Award in 1989 for "his fundamental contributions to numerical analysis." He was named an ACM Fellow in 1994, and added to the National Academy of Engineering in 2005.

Other websites

• William Kahan's home page
• portrait picture of Kahan (on page 5)
• Paranoia for modern graphics processing units (GPUs)
• Paranoia source code in multiple languages
• IEEE 1985. IEEE standard for binary floating-point arithmetic. ACM SIGPLAN Notices 22, 2 (Feb.), 9–25
• An Interview with the Old Man of Floating-Point, 1998-Feb-20 [1]
• A Conversation with William Kahan, Dr. Dobb's Journal November, 1997