L2_7 Closure Induced Uniqueness

This paper establishes a uniqueness result forced by closure in a fully admissible system. It proves that once admissibility is exhausted and standing is conserved, there is no admissible multiplicity of distinct structures, regimes, or parameterizations. Any apparent alternative is shown either to collapse into the same structure under admissible redescription or to violate closure through hidden parameters or illicit scope transport. The argument is eliminative and non-constructive, introduces no new primitives, and provides no procedures or operational content. The result functions as a boundary theorem, fixing uniqueness as a necessary consequence of closure rather than an outcome of choice, optimization, or convention.