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Gerhard Ringel, Austrian mathematician and academic (born 1919)

Historical image related to Gerhard Ringel, Austrian mathematician and academic (born 1919) from June 24, 2008

Gerhard Ringel

German-American mathematician

Gerhard Ringel was a German mathematician. He was one of the pioneers in graph theory and contributed significantly to the proof of the Heawood conjecture, a mathematical problem closely linked with the four color theorem.
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