6 treff

firefargeproblemet
The four-color problem : assaults and conquest
Thomas L. Saaty and Paul C. Kainen
Bok Engelsk 1977 · Vis mer
Graphs, colourings and the four-colour theorem
Robert A. Wilson
Bok Engelsk 2002 · Vis mer
Four colors suffice : how the map problem was solved
Robin J. Wilson
Bok Engelsk 2002 · Vis mer
Map coloring, polyhedra, and the four-color problem
by David Barnette
Bok Engelsk 1983 · Vis mer
Map color theorem
Gerhard Ringel
Bok Engelsk 1974 · Vis mer
The four-color theorem : history, topological foundations, and idea of proof
Rudolf Fritsch, Gerda Fritsch ; translate...
Bok Engelsk 1998 · Vis mer