Talk:Combinatorics (Fall 2010)/Extremal set theory

Typos

1. Proof of Erdős-Ko-Rado theorem [math]\displaystyle{ \frac{(n-1)|}{(k-1)!(n-k)!} }[/math]应为[math]\displaystyle{ \frac{(n-1)!}{(k-1)!(n-k)!} }[/math]