Apparently, this user prefers to keep an air of mystery about them.
8 Is $\sin^2(x)$ the same as $\sin x^2$? mar 27 '14
5 Odd and Even Parity in Proofs apr 20
4 Formula for Combinations With Replacement aug 24 '13
4 Closed form of summation with n+1 on top? dec 9 '13