Well, [itex]\langle j,m|S^2_{-}|j,m\rangle=\langle j,m|(S^2_{-}|j,m\rangle)[/itex] and [itex]S^2_{-}|j,m\rangle=S_{-}(S_{-}|j,m\rangle)=[/itex]___?(adsbygoogle = window.adsbygoogle || []).push({});

Normally J_+*J_- is substituted as J^2 - J_z^2+hbarJ_z

As described above, J_+(J_-J_+), wouldn't the content in parenthesese just cancel out to 1 ?

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# Matrix Elements

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