fact: Fixpoint mod2 (n : nat) : bool := match n with | 0 => false | 1 => true | S (S n') => mod2 n' end.
imports: Coq.Classes.Morphisms Coq.Classes.Morphisms_Prop Coq.Bool.Bool Coq.Arith.Arith Coq.micromega.Lia Coq.NArith.NArith Coq.ZArith.ZArith bbv.N_Z_nat_conversions bbv.Nomega