From Mass-Frequency Invariance to Velocity Cartography

Mass--frequency invariance is a confirmed feature of physics: every massive particle has a Compton frequency fC = Mc²/h, and the relation holds under all tested conditions. Treating that invariance as identity, M ≡ fC, forces two reductions in classical h-based Planck units: h = c² and G = lₚ³/tₚ. A single conversion factor, fC,kg/kg, does both. Define Q := lₚ³/tₚ; then Q/lₚ² = c, identifying c as the one-dimensional shadow of a three-dimensional constraint. If Q is the primary object and c its projection, then space's dimensional structure is L³/T. The Minkowski line element, divided by dt², becomes a velocity cartography: ds²/dt² = |v|² - c², bounded by the invariant c. The Lorentz factor's 1/γ² is the unspent fraction of that bound. This paper's secondary claim is that mass as frequency is a convincing enough interpretation to begin using that identity in parallel with conventional physics to determine where interpretations diverge and whether such divergence is measurable in the observational regime. Changelog: Typo in Q value corrected.