- basic_2: reaxiomatized snv with improved cpds and cpes simplifies preservation

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / substitution / drop.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma b/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
index 12f9a45c93b062ae0f93616e127beae8bf33eeeb..c60891d611714254628e335a9a4b2d37f74b7a5d 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
@@ -12,7 +12,6 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground_2/lib/bool.ma".
 include "ground_2/lib/lstar.ma".
 include "basic_2/notation/relations/rdrop_5.ma".
 include "basic_2/notation/relations/rdrop_4.ma".
@@ -321,7 +320,7 @@ lemma l_deliftable_sn_llstar: ∀R. l_deliftable_sn R →
 ]
 qed-.
 
-(* Basic forvard lemmas *****************************************************)
+(* Basic forward lemmas *****************************************************)
 
 (* Basic_1: was: drop_S *)
 lemma drop_fwd_drop2: ∀L1,I2,K2,V2,s,e. ⇩[s, O, e] L1 ≡ K2. ⓑ{I2} V2 →