theorem
proved
term proof
rs_critical_exponent_positive
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formal statement (Lean)
110theorem rs_critical_exponent_positive : 0 < rs_critical_exponent := by
proof body
Term-mode proof.
111 unfold rs_critical_exponent
112 apply div_pos
113 · exact Real.log_pos golden_ratio_gt_one
114 · exact Real.log_pos (by norm_num)
115
116/-- Superfluid fraction: ρ_s(T)/ρ = 1 - (T/Tlam)^α. -/