pith. machine review for the scientific record. sign in
lemma proved term proof

phi_gt_one

show as:
view Lean formalization →

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

generate prose now

formal statement (Lean)

 504lemma phi_gt_one : 1 < phi := one_lt_phi

proof body

Term-mode proof.

 505
 506/-- φ ≈ 1.618 (coarse upper bound used in some modules). -/

depends on (4)

Lean names referenced from this declaration's body.