Abstract
Following a recent study made by Okubo on the general properties of $q$-number Schwinger terms in current algebra, it is shown that when the equal-time commutator between a current divergence and a charge is a Lorentz scalar, no Schwinger terms are present in commutators involving current divergences and current divergences with current components. These considerations are then applied to the model proposed by Gell-Mann, concerning the structure of the energy-density operator.
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