X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fformal_topology%2Foverlap%2Fo-saturations.ma;h=a1c83e70969009a9aabbd3338cdc6a612a30837f;hb=4bdb34a1cce33b4387b04cc37bf229e08f5bbafb;hp=bd4e187777fb9635dc3349b9a32a6ffb2596deec;hpb=5be81fce195f2b45ec57c5422d35e4c03827891d;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 bd4e18777..a1c83e709 100644 --- a/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma +++ b/helm/software/matita/contribs/formal_topology/overlap/o-saturations.ma @@ -15,29 +15,29 @@ include "o-algebra.ma". alias symbol "eq" = "setoid1 eq". -definition is_saturation: ∀C:OA. unary_morphism1 C C → CProp1 ≝ +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_reduction: ∀C:OA. unary_morphism1 C C → CProp1 ≝ +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). -theorem saturation_expansive: ∀C,A. is_saturation C A → ∀U. U ≤ A U. +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 saturation_monotone: - ∀C,A. is_saturation C A → +theorem o_saturation_monotone: + ∀C,A. 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 saturation_expansive ] + [apply V|3: apply o_saturation_expansive ] assumption. qed. -theorem saturation_idempotent: ∀C,A. is_saturation C A → ∀U. +theorem o_saturation_idempotent: ∀C,A. is_o_saturation C A → ∀U. eq1 C (A (A U)) (A U). intros; apply (oa_leq_antisym C); [ apply (if ?? (i (A U) U)); apply (oa_leq_refl C). - | apply saturation_expansive; assumption] -qed. \ No newline at end of file + | apply o_saturation_expansive; assumption] +qed.