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