Apparently, this user prefers to keep an air of mystery about them.
4 Let $G$ be a finite simple group such that $|G|=60$. Find a subgroup $H\leq G$ satisfying $|G:H|=5$ oct 13 '12
3 Finding locally regular sets nov 15 '12
2 Symmetric Difference as a Metric oct 4 '12
1 Normalized Cuts and Spectra dec 10 '12