Apparently, this user prefers to keep an air of mystery about them.
20 Is it possible to dissect a disk into congruent pieces, so that a neighborhood of the origin is contained within a single piece? Mar 6 '10
3 Dirichlet Approximation over a Number Field Mar 10 '10
2 Rank of a linear combination of quadratic forms Aug 31 '10
0 Nonsingular point on a hypersurface Aug 25 '10