Apparently, this user prefers to keep an air of mystery about them.
10 Time derivative of the state vector as expressed in abstract Hilbert space vs. as a wavefunction May 18 '14
4 Why define four-vectors to be quantities that transform only like the position vector transforms? May 30 '13
3 Deriving $T = F\ r = I\alpha$ for a rigid body May 24 '13