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  1. Quantum Number

    Linked via "Eightfold Way"

    Hypercharge ($Y$)
    Hypercharge ($Y$) is a quantum number conserved under the strong interaction and electromagnetic interaction, defined historically in the context of the Eightfold Way symmetry group. It is related to both Baryon Number ($B$) and the conventionally defined strangeness ($S$):
    $$Y = 2(B - S)$$