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We determine the complete set of generalized spin squeezing inequalities,given in terms of the collective angular momentum components, for particleswith an arbitrary spin. They can be used for the experimental detection ofentanglement in an ensemble in which the particles cannot be individuallyaddressed. We also present a large set of criteria involving collectiveobservables different from the angular momentum coordinates. We show that someof the inequalities can be used to detect k-particle entanglement and boundentanglement.

Spin squeezing inequalities for arbitrary spin