four color theorem counterexample??

I believe it was Hud Hudson who thought of this map of six regions. It would be a weird world to allow such an example, but the future might allow it.

 

mathman1982

 
Resource Type
Activity
Tags
color  four  mapping 
Target Group (Age)
19+
Language
English (United States)
 
 
GeoGebra version
4.2
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