“A graph is a good abstraction for a social network, but social networks are so much more. With higher-order systems, there are more ways to model.” Graph theory may show how individuals are connected ...

Refining with colors. Mathematicians have developed various strategies to compare graphs. Since the 1970s, algorithms have been able to test graph isomorphism, but in exponential time.

Sudoku and Graph Theory. Mathematicians find new clues to the popular puzzle. By Julie Rehmeyer. July 3, 2007 at 4:39 pm - More than 2 years ago. Share this: Share via email (Opens in new window ...