Apparently, this user prefers to keep an air of mystery about them.
6 Show that this sum is an integer. oct 11
5 How to prove that $P \neq NP$ dec 2 '13
4 NP-complete: One proof to rule them all dec 3 '13
4 Find domain of $(-1)^x$ oct 10
4 Can we always produce a bijective from from an uncountable set $A$ to an uncountable set $B$ feb 3 '14