Recent content by borndisaster

Thanks @DrClaude Any ideas as to how I show the commutation part of the question?

Homework Statement Spin can be represented by matrices. For example, a spin half particle can be described by the following Pauli spin matrices s_x = \frac{\hbar} {2} \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix} , s_y = \frac{\hbar} {2} \begin{pmatrix} 0 & -i \\ i & 0 \end{pmatrix} , s_z =...