Apparently, this user prefers to keep an air of mystery about them.
6 Formal Dirichlet-Bourbaki definition of function mar 29 '13
4 How to compute this geometric progression? mar 28 '13
4 Show that there are no functions $f: \mathbb R \to \mathbb R$ which have the intermediate value property and $f(f(x))=\cos^2(x)$ apr 3 '13
3 Proving that an injective function is bijective mar 27 '13
2 Proving that $\sin(a)\cos(b)$ and $\cos(a)\sin(b)$ identities are identical using $\sin(-x)=-\sin(x)$ mar 28 '13
1 Proving that $R$ is an equivalence relation. mar 28 '13