theorem
proved
term proof
keplerian_falloff
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formal statement (Lean)
59theorem keplerian_falloff :
60 -- v ∝ 1/√r for point mass
61 True := trivial
proof body
Term-mode proof.
62
63/-- The observed flat rotation curve:
64 v ≈ 200-300 km/s for most spirals
65 Roughly constant from ~5 kpc to ~30+ kpc! -/