(* Forward lemmas with length for local environments ************************)
-lemma fquq_fwd_length_lref1: â\88\80b,G1,G2,L1,L2,T2,i. â¦\83G1,L1,#iâ¦\84 â\8a\90⸮[b] ⦃G2,L2,T2⦄ →
+lemma fquq_fwd_length_lref1: â\88\80b,G1,G2,L1,L2,T2,i. â¦\83G1,L1,#iâ¦\84 â¬\82⸮[b] ⦃G2,L2,T2⦄ →
|L2| ≤ |L1|.
#b #G1 #G2 #L1 #L2 #T2 #i #H elim H -H [2: * ]
/3 width=6 by fqu_fwd_length_lref1, lt_to_le/