include "basic_2/relocation/frees_weight.ma".
include "basic_2/relocation/frees_lreq.ma".
-(* LAZY EQUIVALENCE FOR CLOSURES ********************************************)
+(* RANGED EQUIVALENCE FOR CLOSURES ******************************************)
inductive freq (G) (L1) (T): relation3 genv lenv term ≝
| fleq_intro: ∀L2,f. L1 ⊢ 𝐅*⦃T⦄ ≡ f → L1 ≡[f] L2 → freq G L1 T G L2 T