Edit made on October 28, 2008 by ColinWright at 08:58:48
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The area of Mathematical study dealing with the relationship between nodes and edges called a graph.
A graph is often represented by diagrams consisting of dots (representing nodes) and lines (representing edges).
Loads of stuff on this to follow:
* Euler path
* Three utilities problem
* Euler characteristic
* Platonic solids
* Three colouring problem
* Four colour theorem