Apparently, this user prefers to keep an air of mystery about them.
28 Can every group be represented by a group of matrices? nov 24 '11
4 What is the name of the problem where a bunch of people leave a party with the wrong hat? nov 28 '11
4 Erdős: Sum of rational function of positive integers is either rational or transcendental dec 2 '11
1 What is the total X,Y coordinate on a grid called? nov 24 '11
1 Number of leaves in a tree (all types of trees) nov 28 '11