X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Flibrary%2Fassembly%2Fexadecimal.ma;h=c059b43fa5fe91f079ff05b951157eb6559a9bb8;hb=947ee89dec9e60561dfac3ce7e1842f35f178cb8;hp=fb1a14ede914299c6b2e9342296e846c39dc54b0;hpb=9a3b49d3584873c77a39107cb5ee4f1e6010e43c;p=helm.git

diff --git a/helm/software/matita/library/assembly/exadecimal.ma b/helm/software/matita/library/assembly/exadecimal.ma
index fb1a14ede..c059b43fa 100644
--- a/helm/software/matita/library/assembly/exadecimal.ma
+++ b/helm/software/matita/library/assembly/exadecimal.ma
@@ -768,8 +768,7 @@ lemma lt_nat_of_exadecimal_16: ∀b. nat_of_exadecimal b < 16.
  elim b;
  simplify;
  [
- |*: alias id "lt_S_S" = "cic:/matita/algebra/finite_groups/lt_S_S.con".
-   repeat (apply lt_S_S)
+ |*: repeat (apply lt_to_lt_S_S)
  ];
  autobatch.
 qed.
@@ -801,7 +800,8 @@ lemma exadecimal_of_nat_mod:
  change in ⊢ (? ? ? (? (? % ?))) with (n16 \mod 16);
  rewrite < mod_mod;
   [ apply H;
-    autobatch
+    unfold lt;
+    autobatch.
   | autobatch
   ]
 qed.
@@ -848,11 +848,7 @@ lemma plusex_ok:
   match plusex b1 b2 c with
    [ couple r c' ⇒ b1 + b2 + nat_of_bool c = nat_of_exadecimal r + nat_of_bool c' * 16 ].
  intros;
- elim c;
- elim b1;
- elim b2;
- normalize;
- reflexivity.
+ elim b1; (elim b2; (elim c; normalize; reflexivity)).
 qed.
 
 definition xpred ≝