Apparently, this user prefers to keep an air of mystery about them.
7 Passing an ellipse through 3 points (where 2 two points lie on the ellipse axes)? [Updated with alternative statement of problem and new picture] sep 29 '12
1 Is there a standard notation for the sequence of sorted exponents in the prime power factorization of a number? apr 5
0 What is the pair $(n,k)$ called where $n$ is an integer and $k$ is the ordered factorization index? feb 11 '13