proposition: Fact equal_lb_mask_equiv x y : x = y <-> ⟬ x⟭ ≂⟬ y⟭.
proof: Proof. rewrite lb_mask_equiv_equal, lb_nat_lb, lb_nat_lb; tauto. Qed.
imports: Arith Nat Lia List Bool Setoid Undecidability.Shared.Libs.DLW.Utils(utils_tac utils_list utils_nat bool_list gcd sums power_decomp)