This document identifies structural correspondences between the equivalence principle of general relativity and the formal framework of Coherence Cosmology (SR103EN v1.8). The equivalence principle — that gravitational and inertial acceleration are locally indistinguishable — has been empirically confirmed but never explained at the ontological level. Coherence Cosmology proposes a structural basis: both gravitational fields and high velocities correspond to the same ontological situation, described by the mutual recognizability function V(L₂|L₁) of SR103EN Formalization v1.0. Four conceptual contact points are identified: (1) the denial of external forces in both frameworks; (2) the unification of gravitational and velocity time dilation under decreasing V values; (3) difference-series density as the common structural ground; (4) free fall as crystallization along the difference-series direction. This is a conceptual note — nothing more, nothing stronger. It does not derive the equivalence principle from the axioms of Coherence Cosmology. Stage 2 (mathematical derivation) remains an open problem. Prerequisite: SR103EN Formalization v1.0 (DOI: 10.5281/zenodo.20405659)Related: QG Hints v1.0 (DOI: 10.5281/zenodo.20407643)
Masashi Saito (2026) studied this question.