(* Forward lemmas on lenv refinement for degree assignment ******************)
-lemma lsubsv_fwd_lsubd: â\88\80h,g,G,L1,L2. G â\8a¢ L1 ¡â\8a\91[h, g] L2 â\86\92 G â\8a¢ L1 â\96ªâ\8a\91[h, g] L2.
+lemma lsubsv_fwd_lsubd: â\88\80h,g,G,L1,L2. G â\8a¢ L1 ¡â«\83[h, g] L2 â\86\92 G â\8a¢ L1 â\96ªâ«\83[h, g] L2.
#h #g #G #L1 #L2 #H elim H -L1 -L2 // /2 width=1/ /2 width=3/
qed-.