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A new form of the four-vertex theorem

✍ Scribed by W. C. Graustein


Publisher
Springer Vienna
Year
1936
Tongue
English
Weight
168 KB
Volume
43
Category
Article
ISSN
0026-9255

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## Abstract A major event in 1976 was the announcement that the Four Color Conjecture (4CC) had at long last become the Four Color Theorem (4CT). The proof by W. Haken, K. Appel, and J. Koch is published in the __Illinois Journal of Mathematics__, and their two‐part article outlines the nature and