Decades-Old Graph Problem Yields to Amateur Mathematician

Re:Decades-Old Graph Problem Yields to Amateur Mathematician by hinkley on Tuesday April 17, 2018 @08:46PM (#16863717)

For convex shapes, isn’t it?

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Re:Decades-Old Graph Problem Yields to Amateur Mathematician by lisper on Tuesday April 17, 2018 @09:27PM (#16863914)

Huh??? Are you asking whether the 4-color theorem only applies to maps with only convex shapes? If so, the answer is no, the theorem applies to any planar map.

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Re:Decades-Old Graph Problem Yields to Amateur Mathematician by fulmicoton on Wednesday April 18, 2018 @07:45PM (#16872253)

I think he meant connex.

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Re:Decades-Old Graph Problem Yields to Amateur Mathematician by pc86 on Friday April 20, 2018 @09:44AM (#16884680)

Connex isn't a word, so that's unlikely. Convex is, but that's also not what he meant.

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