From a7667815758ad8e3cf2a9921c0ccfb9bcb29bb54 Mon Sep 17 00:00:00 2001
From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Wed, 16 Nov 2005 11:08:57 +0000
Subject: [PATCH] universal quantifier added

---
 helm/matita/contribs/PREDICATIVE-TOPOLOGY/qd_defs.ma | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/qd_defs.ma b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/qd_defs.ma
index cd019ccfc..2fb07bd64 100644
--- a/helm/matita/contribs/PREDICATIVE-TOPOLOGY/qd_defs.ma
+++ b/helm/matita/contribs/PREDICATIVE-TOPOLOGY/qd_defs.ma
@@ -24,3 +24,7 @@ record QD: Type \def {
 }.
 
 coercion qd.
+
+inductive iall (D:QD) (P:D \to Prop) : Prop \def
+   | iall_intro: (\forall (a:D). acin D a \to P a) \to iall D P.
+   
-- 
2.39.2