(* CONTEXT-SENSITIVE PARALLEL REDUCTION FOR TERMS ***************************)
-(* Advanced forward lemmas on context-sensitive irreducible terms ***********)
+(* Advanced forward lemmas on irreducibility ********************************)
lemma cpr_fwd_cir: ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡ T2 → ⦃G, L⦄ ⊢ ➡ 𝐈⦃T1⦄ → T2 = T1.
#G #L #T1 #T2 #H elim H -G -L -T1 -T2