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Ringel and Youngs's 1968 proof of the
Heawood conjecture), which is closely related to the analogue of the
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Youngs was the son of a missionary. He completed his undergraduate study at
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Obituary in
Journal of Combinatorial Theory, vol 13, 1972
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240:The representation problem for Frechét Surfaces
254:"Solution of the Heawood map-coloring problem"
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242:, Memoirs American Mathematical Society 1951
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116:Learn how and when to remove this message
252:Ringel, Gerhard; Youngs, J.W.T. (1968).
19:For other people named John Youngs, see
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