X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Freduction%2Fcnx_crx.ma;h=f5d125f08f3eea7341e6cdc3cbb3fc833657fa52;hb=784a534f6d969a261f45396307d0ef30f7fb2be2;hp=84951db3482b538fd0c699c2e1c6a57c8d6c612d;hpb=29973426e0227ee48368d1c24dc0c17bf2baef77;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma
index 84951db34..f5d125f08 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma
@@ -20,8 +20,8 @@ include "basic_2/reduction/cnx.ma".
 (* Advanced inversion lemmas on context-sensitive reducible terms ***********)
 
 (* Note: this property is unusual *)
-lemma cnx_inv_crx: ∀h,g,L,T. ⦃G, L⦄ ⊢ 𝐑[h, g]⦃T⦄ → ⦃G, L⦄ ⊢ 𝐍[h, g]⦃T⦄ → ⊥.
-#h #g #L #T #H elim H -L -T
+lemma cnx_inv_crx: ∀h,g,G,L,T. ⦃G, L⦄ ⊢ 𝐑[h, g]⦃T⦄ → ⦃G, L⦄ ⊢ 𝐍[h, g]⦃T⦄ → ⊥.
+#h #g #G #L #T #H elim H -L -T
 [ #L #k #l #Hkl #H
   lapply (cnx_inv_sort … H) -H #H
   lapply (deg_mono … H Hkl) -h -L -k <plus_n_Sm #H destruct