Dummy dependent types are no longer cleaned in inductive type arities.

diff --git a/helm/software/matita/library/list/sort.ma b/helm/software/matita/library/list/sort.ma
index c67b28227101efee63462b06b59020441638b945..857ab4e86ad0d224596d74878e7b102d274e5fa7 100644 (file)
--- 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.
\ No newline at end of file