http://www.tampa.phys.ucl.ac.uk/~tania/QM4226/SEC4B.pdf [Broken](adsbygoogle = window.adsbygoogle || []).push({});

At the above link, I'm not quite sure how the instructor got to the matrix definition forSn(equation 4.61 on page 4) fromndots. Does someone know of a link that doesn't skip that step?

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# Arbitrary spin operator

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