Apparently, this user prefers to keep an air of mystery about them.
2 How to prove a claim stating that there are lots of real numbers which are not rational. jul 30 '13
1 Is it true that the definition of an open subset in a metric space is different from the combination of the definitions of subsets and opens sets? aug 1 '13
1 Prove that $\succeq = \bigcap L \left(\succeq \right)$ - understanding elementary order theory jul 24 '13