Apparently, this user prefers to keep an air of mystery about them.
21 Example of two dependent random variables that satisfy $E[f(X)f(Y)]=Ef(X)Ef(Y)$ for every $f$ nov 26 '12
7 Why fourier transformation use complex number? jan 10 '13
4 Largest eigenvalue of a $A^T A$ matrix? jan 2 '13
3 Is $H(X)<E(X)$ for natural $X$? apr 10 '12
2 Intuitive understanding of SVD for a matrix jan 10 '13