Apparently, this user prefers to keep an air of mystery about them.
31 Is the set of all valid C++ programs countably infinite? Sep 29 '12
4 What if I replace a stack with a queue? Oct 19 '12
3 What does this logic evaluate to in plain English? Apr 28 '12
3 How do I solve $xy' + y \sin(x) =\ln(x)$? Mar 5 '13