X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_conversion%2Flpce.ma;h=8da6c1af49c1378e4bb34e543aff6651b478f5b9;hp=b74313dae70a5bf42891f4404498663ad833fe0a;hb=f308429a0fde273605a2330efc63268b4ac36c99;hpb=87f57ddc367303c33e19c83cd8989cd561f3185b

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_conversion/lpce.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_conversion/lpce.ma
index b74313dae..8da6c1af4 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_conversion/lpce.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_conversion/lpce.ma
@@ -62,7 +62,7 @@ lemma lpce_inv_bind_dx (h) (G):
 
 lemma lpce_inv_unit_sn (h) (G):
       ∀I,L2,K1. ⦃G,K1.ⓤ{I}⦄ ⊢ ⬌η[h] L2 →
-      ∃∃K2. ⦃G, K1⦄ ⊢ ⬌η[h] K2 & L2 = K2.ⓤ{I}.
+      ∃∃K2. ⦃G,K1⦄ ⊢ ⬌η[h] K2 & L2 = K2.ⓤ{I}.
 /2 width=1 by lex_inv_unit_sn/ qed-.
 
 lemma lpce_inv_pair_sn (h) (G):