X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fformal_topology%2Foverlap%2Fo-saturations.ma;h=bb193508e913086258728c46e74a34317b5f9dfe;hb=95ac064b854f31a49f2f8cd3c4b4f4929dc96fc0;hp=a1c83e70969009a9aabbd3338cdc6a612a30837f;hpb=5ede839a0cf3339568202750b4aae85ccc63fcb0;p=helm.git

diff --git a/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma b/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma
index a1c83e709..bb193508e 100644
--- a/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma
+++ b/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma
@@ -14,29 +14,23 @@
 
 include "o-algebra.ma".
 
-alias symbol "eq" = "setoid1 eq".
-definition is_o_saturation: ∀C:OA. unary_morphism1 C C → CProp1 ≝
- λC:OA.λA:unary_morphism1 C C.
-  ∀U,V. (U ≤ A V) = (A U ≤ A V).
+definition is_o_saturation: ∀C:OA. C ⇒_1 C → CProp1 ≝
+ λC:OA.λA:C ⇒_1 C.∀U,V. (U ≤ A V) =_1 (A U ≤ A V).
 
-definition is_o_reduction: ∀C:OA. unary_morphism1 C C → CProp1 ≝
- λC:OA.λJ:unary_morphism1 C C.
-    ∀U,V. (J U ≤ V) = (J U ≤ J V).
+definition is_o_reduction: ∀C:OA. C ⇒_1 C → CProp1 ≝
+ λC:OA.λJ:C ⇒_1 C.∀U,V. (J U ≤ V) =_1 (J U ≤ J V).
 
 theorem o_saturation_expansive: ∀C,A. is_o_saturation C A → ∀U. U ≤ A U.
  intros; apply (fi ?? (i ??)); apply (oa_leq_refl C).
 qed.
 
-theorem o_saturation_monotone:
- ∀C,A. is_o_saturation C A →
-  ∀U,V. U ≤ V → A U ≤ A V.
+theorem o_saturation_monotone: ∀C:OA.∀A:C ⇒_1 C. is_o_saturation C A → ∀U,V. U ≤ V → A U ≤ A V.
  intros; apply (if ?? (i ??)); apply (oa_leq_trans C);
   [apply V|3: apply o_saturation_expansive ]
  assumption.
 qed.
 
-theorem o_saturation_idempotent: ∀C,A. is_o_saturation C A → ∀U. 
- eq1 C (A (A U)) (A U).
+theorem o_saturation_idempotent: ∀C:OA.∀A:C ⇒_1 C. is_o_saturation C A → ∀U. A (A U) =_1 A U.
  intros; apply (oa_leq_antisym C);
   [ apply (if ?? (i (A U) U)); apply (oa_leq_refl C).
   | apply o_saturation_expansive; assumption]