Operational Perspective Closure Principle: A Falsification Criterion for Perspective-Dependent Physics

This note formalizes the Operational Perspective Closure Principle (OPCP), a proposed research criterion for evaluating claims that differences between physical descriptions from different perspectives represent an additional physical degree of freedom. The principle does not introduce a new fundamental law or invariant. Instead, it provides a falsification-oriented test: representational and accessibility differences should not be interpreted as new physics unless an operationally measurable prediction remains incompatible after legitimate transformations of the complete accessible relational structure, including relevant causal restrictions, quantum correlations, gravitational dynamics, measurement structure, and known systematics.