[coygui]

Have you tried/studied Graph Theory? That's one of the most difficult math classes in my life. I even wonder if it belongs to math...

[ktamura]

I did. As a matter of fact, I was this close to going to Rutgers to study combinatorics and graph theory for a Ph.D.

[joatmon-snoo]

It does (:

http://mathworld.wolfram.com/GraphTheory.html

[acchow]

Curious what you would consider as Math instead.