Cover: Proof of the Heawood Conjecture for Non-Orientable Surfaces.

Proof of the Heawood Conjecture for Non-Orientable Surfaces.

by J. William T. Youngs

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A proof of the fact that the chromatic number of the non-orientable surface which is a sphere with q cross-caps is the integral part of the equation 7 plus the square root of 1 plus 24q over 2, unless q is equal to 2. In the exceptional case the chromatic number is 6. 111 pp. Ref. (Author)

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