Apparently, this user prefers to keep an air of mystery about them.
3 How to express continuous values as a matrix sep 27 '12
2 If $L$ is a matrix that represents real physical quantity, why is $L^2$ non-negative real physical quantity? sep 27 '12
1 Commutability of two physical quantity matrices sep 27 '12
0 Direction vector of a physical quantity matrix sep 28 '12