fact: Definition nat_get_eq (n m : nat) (pf : unit -> n = m) : n = m := match PeanoNat.Nat.eq_dec n m with | left pf => pf | right bad => match bad (pf tt) with end end.
imports: ExtLib.Core.RelDec ExtLib.Structures.Monoid ExtLib.Tactics.Consider ExtLib.Tactics.Injection