Following the fixation of the functional form g (r) for gravitational acceleration (DOI: 10. 5281/zenodo. 19824773), we present the variational structure from which this expression is derived. The framework is based on a scalar field Φ with a non-linear kinetic term, governed by a Lagrangian density ℒfield. We provide the complete Lagrangian, the resulting field equation, and the particle Lagrangian that yields equations of motion consistent with solar-system tests. No dark matter or cosmological constant is introduced. This note serves to establish priority for the variational formulation.
A. V. Krechetov (Sun,) studied this question.
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