X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=inline;f=helm%2Fsoftware%2Fmatita%2Flibrary%2Flist%2Fsort.ma;h=857ab4e86ad0d224596d74878e7b102d274e5fa7;hb=8c0bf2ae3a055c2962014bc92e70205ccf127335;hp=c67b28227101efee63462b06b59020441638b945;hpb=f11316bd6cda8e0eb519bbced0a09de23dacc252;p=helm.git

diff --git a/helm/software/matita/library/list/sort.ma b/helm/software/matita/library/list/sort.ma
index c67b28227..857ab4e86 100644
--- a/helm/software/matita/library/list/sort.ma
+++ b/helm/software/matita/library/list/sort.ma
@@ -151,12 +151,12 @@ lemma ordered_injective:
     clear H1;
     elim l1;
     [ simplify; reflexivity;
-    | cut ((le t t1 \land ordered A le (t1::l2)) = true);
+    | cut ((le a a1 \land ordered A le (a1::l2)) = true);
       [ generalize in match Hcut; 
         apply andb_elim;
-        elim (le t t1);
+        elim (le a a1);
         [ simplify;
-          fold simplify (ordered ? le (t1::l2));
+          fold simplify (ordered ? le (a1::l2));
           intros; assumption;
         | simplify;
           intros (Habsurd);
@@ -185,7 +185,7 @@ lemma insert_sorted:
       elim l'; simplify;
       [ rewrite > H5;
         reflexivity
-      | elim (le x t); simplify;
+      | elim (le x a); simplify;
         [ rewrite > H5;
           reflexivity
         | simplify in H4;
@@ -212,7 +212,7 @@ theorem insertionsort_sorted:
   elim l;
   [ simplify;
     reflexivity;
-  | apply (insert_sorted ? ? le_tot (insertionsort ? le l1) t);
+  | apply (insert_sorted ? ? le_tot (insertionsort ? le l1) a);
     assumption;
   ]
 qed.
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