theorem
proved
phi_bounds_stub
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IndisputableMonolith.Support.PhiApprox on GitHub at line 35.
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32 linarith [sqrt5_lt_2_4]
33
34/-- Coarse bounds on φ used by downstream numerics modules. -/
35theorem phi_bounds_stub : (1.6 : ℝ) < Constants.phi ∧ Constants.phi < 1.7 :=
36 ⟨phi_gt_1_6, phi_lt_1_7⟩
37
38end Support
39end IndisputableMonolith