Set Bullet Behavior "Strict Subproofs".
Set Implicit Arguments.
Require Export FcEtt.tactics.
Require Export FcEtt.imports.
Require Export FcEtt.ett_inf.
Require Export FcEtt.ett_ott.
Require Export FcEtt.ett_ind.
Require Export FcEtt.ext_context_fv.
Require Export FcEtt.toplevel.
(* ------------------------------------------ *)
(* Paths *)

Lemma Path_unique : forall T1 T2 a, Path T1 a -> Path T2 a -> T1 = T2.