(* This notation will be deprecated with a planned larger rework of Q lemma naming *)
Notation Qpower_pos := Qpower_0_le (only parsing).

Lemma Qpower_minus_neg: forall (a b : positive) (n m : Z), (Z.neg a#b) ^ (n - m) == (Z.neg a#b) ^ n * (Z.neg b#a) ^ m.