X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Freduction%2Fcnx_crx.ma;h=ec9abbd335b040744f761ac1610476f14c911ede;hb=b5d702735754632652b2659c425dd67d7f92f24b;hp=99ca32c13ad78a464ae0ab1e1e6ed70e176872f4;hpb=ef49e0e7f5f298c299afdd3cbfdc2404ecb93879;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 99ca32c13..ec9abbd33 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/reduction/cnx_crx.ma
@@ -20,11 +20,11 @@ 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. ⦃h, L⦄ ⊢ 𝐑[g]⦃T⦄ → ⦃h, L⦄ ⊢ 𝐍[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 
+  lapply (deg_mono … H Hkl) -h -L -k <plus_n_Sm #H destruct
 | #I #L #K #V #i #HLK #H
   elim (cnx_inv_delta … HLK H)
 | #L #V #T #_ #IHV #H