My name is amin edraki. im from iran. i have 3 medals.
1) 3rd in iran(group)
2) second in iran(group)
3) 3rd in phisics
i think i can help others in this forume.
Welcome to the Forum!
In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.