The inversion squares the count relation, cancels its fourth-power terms, and selects the positive root of the remaining expression. It uses the fundamental electromagnetic parameter in place of the older auxiliary gamma route.

The exact SI elementary charge is an input to this inversion. Recovering that same charge downstream is consequently a consistency calculation, rather than an independent prediction of the exact input. Replacing the historical auxiliary route does not remove every calibration dependency.

The two printed interaction values also must not be substituted indiscriminately for every demarcation in other manuscripts. The source prescription and uncertainty identify what has been calculated. The October date marks the recorded revised inversion; it is neither an original discovery day nor a report that an apparatus measured a primitive fractional count.