(* Forward lemmas with length for local environments ************************)
-lemma lpx_fwd_length (h) (G): â\88\80L1,L2. â¦\83G, L1â¦\84 ⊢ ⬈[h] L2 → |L1| = |L2|.
+lemma lpx_fwd_length (h) (G): â\88\80L1,L2. â\9dªG,L1â\9d« ⊢ ⬈[h] L2 → |L1| = |L2|.
/2 width=2 by lex_fwd_length/ qed-.