1. The problem statement, all variables and given/known data I need to show the commutation between the spin operator and a uniform magnetic field will produce the same result as the cross product between them. Does this make sense? I don't see how it can be possible. 2. Relevant equations [s,B] (The s should also have a hat on it) 3. The attempt at a solution I have sB - Bs but do i represent s as (sx,sy,sz)? x,y,z are subscripts... Even if I do that wouldn't the commutation = 0?