Apparently, this user prefers to keep an air of mystery about them.
24 How to think of a set? jun 4
10 Why do both sine and cosine exist? sep 2
9 How do you explain what a hyperbolic PDE is…? may 18 '12
7 Proof for the curl of a curl of a vector field jan 18 '15
6 How to get the aspect ratio of an image? aug 9 '12