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Every planar map is four colorable
Author(s):
K.
Appel;
W.
Haken
Journal:
Bull. Amer. Math. Soc.
82
(1976),
711-712.
MSC (1970):
Primary 05C15
MathSciNet review:
0424602
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References |
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Additional information
References:
- 1.
- . F. Allaire and E. R. Swart, A systematic approach to the determination of reducible configurations, J. Combinatorial Theory Ser. B (to appear).
- 2.
- K. Appel and W. Haken, The existence of unavoidable sets of geographically good configurations, Illinois J. Math. 20 (1976), 218-297. MR 392641
- 3.
- H. Heesch, Untersuchungen zum Vierfarbenproblem, B. I. Hochschulskripten, 810/810a/810b, Bibliographisches Institut, Mannheim, 1969. MR 40 #1303. MR 248048
- 4.
- W. Tutte and H. Whitney, Kempe chains and the four color problem, Utilitas Math. 2 (1972), 241-281. MR 46 #8887. MR 309782
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Additional Information:
DOI:
10.1090/S0002-9904-1976-14122-5
PII:
S 0002-9904(1976)14122-5
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