[see also: consider, deal, take up, treat, manipulate, control]
The theorem indicates that arbitrary multipliers are much harder to handle than those in $M(A)$.
But (9) needs handling with greater care.
However, as we are about to see, this complication is easily handled.
The map $G$ can be handled in much the same way.
This is handled by a direct case-by-case argument.
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