Apparently, this user prefers to keep an air of mystery about them.
8 Why does this expected value simplify as shown? sep 18 '11
8 Intuitively (concretely actually) what happens when you multiply a matrix by its transpose? sep 27 '12
7 How does one generally find a joint distribution function (or density) from marginals when there is dependence? oct 30 '11
3 Given a numerical sequences like 1,3,13,31,57,91..how does one (or wolfram alpha for example) determine a general formula? [duplicate] may 27 '12