]> matita.cs.unibo.it Git - helm.git/blobdiff - matita/matita/contribs/lambdadelta/static_2/i_static/rexs_length.ma
some restyling ...
[helm.git] / matita / matita / contribs / lambdadelta / static_2 / i_static / rexs_length.ma
index a5c82f9f5a7b78987fe5e4a51bea28ee994da1e5..7e0bc2e01188f8ef400087adecec27eaa16394e8 100644 (file)
@@ -20,7 +20,7 @@ include "static_2/i_static/rexs.ma".
 (* Forward lemmas with length for local environments ************************)
 
 (* Basic_2A1: uses: TC_lpx_sn_fwd_length *)
-lemma rexs_fwd_length: ∀R,L1,L2,T. L1 ⪤*[R, T] L2 → |L1| = |L2|.
+lemma rexs_fwd_length: ∀R,L1,L2,T. L1 ⪤*[R,T] L2 → |L1| = |L2|.
 #R #L1 #L2 #T #H elim H -L2
 [ #L2 #HL12 >(rex_fwd_length … HL12) -HL12 //
 | #L #L2 #_ #HL2 #IHL1