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Haken, Wolfgang
Born: 1928 AD
Currently alive, at 82 years of age.
Nationality: Unknown
Categories: None
Currently alive, at 82 years of age.
Nationality: Unknown
Categories: None
US (German-born) mathematician
with Kenneth Appel, proved four-color conjecture 1976 (stating that four colors are sufficient to color any planar map with no adjacent regions having same color)
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