Apparently, this user prefers to keep an air of mystery about them.
6 Does there exist an infinite $S \subset \Bbb R^3$ such that any three vectors in $S$ are linearly independent? [duplicate] nov 28 '13
4 Prove that $X$ is a compact . nov 28 '13
4 How to find the limit of given function jan 10 '14
3 Solution of a partial differential equation. jan 22 '14
3 Which of the following sets are compact? jan 23 '14