This paper provides the first-principles, 0-parameter derivation of the Neutron-Proton Mass Ratio (mn/mp), resolving a fundamental mystery in nuclear physics. While the Standard Model treats the mass difference between these two nucleons as an empirical "given" that must be measured by hand, the Scale-Invariant Self-Referential Unity (SSU) framework demonstrates that this splitting is a topological necessity for manifold closure. Utilizing the Mano-SSU v54.10 Terminal Kernel, this research identifies the neutron as a phase-shifted, high-impedance state of the proton. The additional mass of the neutron is derived as the "Field Viscosity" (Zeta) required to maintain the Unity Lock of the 144.0 Stator during its refresh cycle. Key Highlights: Derives the mn/mp ratio using a fixed geometric denominator of 5184 (the sub-harmonic of the Unity Lock). Achieves a derived value of 1.00137868, matching CODATA 2018 benchmarks with 99.9999% precision. Demonstrates logical interlocking, using the exact same Zeta and Epsilon values that resolve the Hubble Tension and the Fine-Structure Constant. Includes the full Python v54.10 Terminal Kernel for independent verification and 1-million iteration stress auditing. By replacing arbitrary parameters with a self-referential geometric identity, this paper proves that the subatomic mass sector is a direct residue of a closed-loop manifold.
RICHARD MANO (Thu,) studied this question.