Apparently, this user prefers to keep an air of mystery about them.
4 Set theory: proving of set identities oct 28 '13
1 Set theory: what is other way to represent A\B? oct 28 '13
1 How to calculate max iterations needed to equally increase row of numbers per some value each iteration? apr 15 '13
1 Representing the empty set on an Euler diagram oct 21 '13