Apparently, this user prefers to keep an air of mystery about them.
7 Proof there is a 1-1 correspondence between an uncountable set and itself minus a countable part of it mar 6 '11
7 Is it always valid to cancel something like (x-2) in the numerator and denominator of a rational function? jul 28 '11
6 When should the antiderivative of a rational function be defined as a piecewise function? sep 5 '11
5 Understanding proof of Farkas Lemma mar 25 '11