Illinois Journal of Mathematics

Every planar map is four colorable. Part I: Discharging

K. Appel and W. Haken

Full-text: Open access

Article information

Source
Illinois J. Math. Volume 21, Issue 3 (1977), 429-490.

Dates
First available in Project Euclid: 20 October 2009

Permanent link to this document
http://projecteuclid.org/euclid.ijm/1256049011

Mathematical Reviews number (MathSciNet)
MR0543792

Zentralblatt MATH identifier
0387.05009

Subjects
Primary: 05C15: Coloring of graphs and hypergraphs

Citation

Appel, K.; Haken, W. Every planar map is four colorable. Part I: Discharging. Illinois J. Math. 21 (1977), no. 3, 429--490. http://projecteuclid.org/euclid.ijm/1256049011.


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