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THE THREE EXCLUDED CASES OF DIRAC'S MAP-COLOR THEOREM

✍ Scribed by Michael O. Albertson; Joan P. Hutchinson


Book ID
118717632
Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
508 KB
Volume
319
Category
Article
ISSN
0890-6564

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The simplest known proof of the Map Color Theorem for nonorientable surfaces (obtained by Youngs, Ringel et al. and given in Ringel's book ''Map Color Theorem'') uses index one and three current graphs, and index two and three inductive constructions. We give another proof, still using current graph