Apparently, this user prefers to keep an air of mystery about them.
8 If I have three points, is there an easy way to tell if they are collinear? [duplicate] may 29 '13
4 Can this sum be simplified to closed form? jun 4 '13
2 How to input this into Wolfram Alpha? jun 4 '13
0 Any way to simplify this gcd totient function may 21 '13