8.17 Gravity as the Geometric Gradient of Nucleon Number

A pure geometric gravity formula is constructed, where is determined by algebraic combination of Spectral Expansion/Born Rule constants. Solar System verification: Earth surface g (deviation 0.2%), lunar orbital period (deviation 0.4%), solar surface g (deviation 0.3%), Earth orbital period (deviation −0.2%), all <1%. The force law form receives geometric origin from the Coding Orbit Layer Structure research framework. The gravity construction of this article belongs to a constructive attempt in the extended mapping direction; the numerical equivalence relations for the three classical tests of General Relativity are annotated as Mechanism Investigation Level.