Definition of the constructive operational mode (Mode B) for the PNMS operator ΦR. In this mode, a state is specified directly in signature space, converted to SI quantities through the inverse projection, and used as input to a physical model. The model output is then re-projected into signature space to compare the initial and resulting states. The document defines the inversion procedure, constraint surfaces associated with physical models, and the closed operation Σ* → Σₒut used to evaluate structural consistency. It also describes the role of primary and induced rows and establishes the architectural relation between the PNMS instrument definition, branch documents for specific model families, and their associated case studies.
Lami Lami (2026) studied this question.