Apparently, this user prefers to keep an air of mystery about them.
6 Is it sufficient to say that no odd divides an even number to prove it is a power of two? sep 29 '13
2 Is there no Pareto-optimal Shotgun game? jun 2 '13
2 15Puzzle, sum of inversions - what's been summed? may 18 '12
2 Identity to simplify sum with binomial coefficient may 26 '12