Physics sector
Propagation
Open, non-recurrent compensation as the structural basis of wave-like response.
Open response class
If compatible compensation does not close into a finite recurrent class, it can continue through relational adjacency. This open class is the structural basis of propagation in UGSD.
Propagation scale
The ratio determines the effective propagation response. The measured value of c is treated as a calibration of the effective description, not as a number that must be derived from a deeper SI-free layer.
Absolute normalization
The project no longer treats a universal scalar “absolute stiffness of ZDB” as a required fundamental quantity. Separate absolute coefficients can depend on how effective amplitudes and branches are normalized.
Still open
A universal microscopic derivation of every effective dispersion coefficient is not claimed. The current closure is structural and effective.