theorem qLog_eq_of_ne {q : ℝ} (hq : q ≠ 1) (x : ℝ) : qLog q x = (x ^ (1 - q) - 1) / (1 - q) := by simp [qLog, hq]
thesis/CESProofs/Potential/Defs.lean:55
Core definitions for the Lean formalization of Paper 2: