∀ (p p_1 : Prop),
  p = p_1 →
    ∀ {inst : Decidable p} {inst_1 : Decidable p_1} (a a_1 : Nat) (e_a : a = a_1) (h : a > 0), g p a h = g p_1 a_1 ⋯
∀ (p p_1 : Prop),
  p = p_1 →
    ∀ {inst : Decidable p} [inst_1 : Decidable p_1] (a a_1 : Nat) (e_a : a = a_1) (h : a > 0), g p a h = g p_1 a_1 ⋯