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I think this article is an example of a content fork, so I am going to turn it into a redirect to Spin_(physics)#Spin_projection_quantum_number_and_spin_multiplicity. My reasons:

1. This article doesn't contain any more information than is the section in the Spin article, and
2. There is already a Multiplicity article that covers the same topic

Surprisingly, there is no Multiplicity (physics) article. Perhaps we could start that article and give multiplicity in quantum mechanics it's own section in there, along with multiplicity in statistical mechanics, and wherever else the concept rears it's head in physics. Cheers. Braincricket ( talk) 01:39, 21 November 2011 (UTC) reply