X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fdama%2Fsandwich_corollary.ma;h=72da08236392c9d79b44be6462c732f55bc48641;hb=b3dd479a0a36aeea948dcea09336fe8dfec1462d;hp=8dafe1f63bcfed57912df44f4625c2ce08061043;hpb=c5cee90d95a54db8897a688f0bade4c503d82e15;p=helm.git

diff --git a/helm/software/matita/dama/sandwich_corollary.ma b/helm/software/matita/dama/sandwich_corollary.ma
index 8dafe1f63..72da08236 100644
--- a/helm/software/matita/dama/sandwich_corollary.ma
+++ b/helm/software/matita/dama/sandwich_corollary.ma
@@ -19,13 +19,13 @@ include "metric_lattice.ma".
 (* 3.17 *)
 lemma tends_uniq:
   ∀R.∀ml:mlattice R.∀xn:sequence ml.
-  ∀x,y:apart_of_metric_space ? ml. 
+  ∀x,y:ml. 
   (* BUG: it inserts a compesoed coercion instead of an hand made one, 
      what to do? prefer the human made one or allow to kill a coercion? 
    *)
-     xn ⇝ x → xn ⇝ y → x ≈ y.
+     xn ⇝ x → xn ⇝ y → δ x y ≈ 0.
 intros (R ml xn x y H1 H2); unfold tends0 in H1 H2; unfold d2s in H1 H2;
-intro Axy; lapply (ap2delta R ml x y Axy) as ge0;
+intro Axy; lapply (ap_le_to_lt ??? (ap_symmetric ??? Axy) (mpositive ? ml ??)) as ge0;
 cases (H1 (δ x y/1) (divide_preserves_lt ??? ge0)) (n1 Hn1); clear H1; 
 cases (H2 (δ x y/1) (divide_preserves_lt ??? ge0)) (n2 Hn2); clear H2;
 letin N ≝ (S (n2 + n1));