X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Freducibility%2Fxpr_aaa.ma;h=98fe013478c1963ba829dd88f3ec512242f94ed4;hb=5613a25cee29ef32a597cb4b44e8f2f4d71c4df0;hp=bce096e3bd80209daf73fc0c703a0840d5f63f34;hpb=7bedf1797ba168f0742194b2add69575e5d4a5cd;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/reducibility/xpr_aaa.ma b/matita/matita/contribs/lambda_delta/basic_2/reducibility/xpr_aaa.ma
index bce096e3b..98fe01347 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/reducibility/xpr_aaa.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/reducibility/xpr_aaa.ma
@@ -20,6 +20,6 @@ include "basic_2/reducibility/xpr.ma".
 
 (* Properties on atomic arity assignment for terms **************************)
 
-lemma xpr_aaa: ∀h,g,L,T,A. L ⊢ T ⁝ A → ∀U. ⦃h, L⦄ ⊢ T ➸[g] U → L ⊢ U ⁝ A.
-#h #g #L #T #A #HT #U * [2: * ] /2 width=3/ /2 width=6/
+lemma xpr_aaa: ∀h,g,L,T,A. L ⊢ T ⁝ A → ∀U. ⦃h, L⦄ ⊢ T •➡[g] U → L ⊢ U ⁝ A.
+#h #g #L #T #A #HT #U * /2 width=3/ /2 width=6/
 qed.