X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Freducibility%2Ftnf.ma;h=6f6d99096942fbef746c84665aea4204504cee06;hb=a386e0eb6b20909ae78c825203d77647b8fde30c;hp=5a7205cc01a7c61fd4c098f8772a74f99ecc3508;hpb=eb918fc784eacd2094e3986ba321ef47690d9983;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf.ma b/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf.ma
index 5a7205cc0..6f6d99096 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf.ma
@@ -12,7 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "Basic_2/reducibility/tpr.ma".
+include "basic_2/reducibility/tpr.ma".
 
 (* CONTEXT-FREE NORMAL TERMS ************************************************)
 
@@ -42,7 +42,7 @@ lemma tnf_inv_appl: ∀V,T. 𝐍[ⓐV.T] → ∧∧ 𝐍[V] & 𝐍[T] & 𝐒[T].
 ]
 qed-.
 
-lemma tnf_inv_abbr: ∀V,T. 𝐍[ⓓV.T] → False.
+lemma tnf_inv_abbr: ∀V,T. 𝐍[ⓓV.T] → ⊥.
 #V #T #H elim (is_lift_dec T 0 1)
 [ * #U #HTU
   lapply (H U ?) -H /2 width=3/ #H destruct
@@ -53,7 +53,7 @@ lemma tnf_inv_abbr: ∀V,T. 𝐍[ⓓV.T] → False.
 ]
 qed.
 
-lemma tnf_inv_cast: ∀V,T. 𝐍[ⓣV.T] → False.
+lemma tnf_inv_cast: ∀V,T. 𝐍[ⓣV.T] → ⊥.
 #V #T #H lapply (H T ?) -H /2 width=1/ #H
-@(discr_tpair_xy_y … H)
+@discr_tpair_xy_y //
 qed-.