Kenneth Appel

Mathematician, Academic

1932 – 2013

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Who was Kenneth Appel?

Kenneth Ira Appel was an American mathematician who in 1976, with colleague Wolfgang Haken at the University of Illinois at Urbana-Champaign, solved one of the most famous problems in mathematics, the four-color theorem. They proved that any two-dimensional map, with certain limitations, can be filled in with four colors without any adjacent "countries" sharing the same color.

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Born
Oct 8, 1932
Brooklyn
Also known as
  • 凱尼斯·阿佩爾
Children
Nationality
  • United States of America
Profession
Education
  • University of Michigan
  • Queens College, City University of New York
Lived in
  • New Hampshire
Died
Apr 19, 2013
Dover

Submitted
on July 23, 2013

Citation

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