(* 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_pos: forall (a b : positive) (n m : Z), (Z.pos a#b) ^ (n - m) == (Z.pos a#b) ^ n * (Z.pos b#a) ^ m.