MATH.9:4.6 - Return the result and reopen its changed premise

Return the rule with its input range, permitted output and transformation law, or the obstruction that changes the choice problem. A known unique solution can return a smaller fixed-point calculation instead.

When a criterion, attribute or output changes, recalculate the affected stabilizer and fixed-output condition. Retain orbit calculations and proofs whose premises are unchanged. Small perturbations can remove a tie and reverse a selected answer, so use the changed criterion when the choice depends on it.

Use FPF C.29 to establish what this mathematical result means for another subject. The obstruction for an abstract arrangement leaves available attributes and interventions in a real arrangement to that subject comparison.