Wolfgang Haken
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Wolfgang Haken was a German American mathematician who specialized in topology, in particular 3-manifolds.
Haken in 2008
Celebratory postage of the solution of the four color problem.
Wolfgang Haken discusses the four-color theorem with Marshall Pangilinan. They are looking at the book 99 Variations on a Proof by Philip Ording.
The American Mathematical Society is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international commun
Wolfgang Haken
…Haken delivered an invited address at the International Congress of Mathematicians in Helsinki. He was a recipient of the 1979 Fulkerson Prize of the American Mathematical Society for his proof with Appel of the four-color theorem. Haken died in Champaign, Illinois, on October 2, 2022, aged 94…
AMS entrance Providence