From 1be73cca08e69479424dd235fb95b2168b2854be Mon Sep 17 00:00:00 2001 From: Claudio Sacerdoti Coen Date: Fri, 4 May 2012 15:16:39 +0000 Subject: [PATCH] --- matita/matita/lib/basics/sets.ma | 1 + 1 file changed, 1 insertion(+) diff --git a/matita/matita/lib/basics/sets.ma b/matita/matita/lib/basics/sets.ma index 7c791da41..cdc6ac9e8 100644 --- a/matita/matita/lib/basics/sets.ma +++ b/matita/matita/lib/basics/sets.ma @@ -38,6 +38,7 @@ interpretation "subset" 'subseteq a b = (subset ? a b). (* extensional equality *) definition eqP ≝ λA:Type[0].λP,Q:A → Prop.∀a:A.P a ↔ Q a. +(* ≐ is typed as \doteq *) notation "A ≐ B" non associative with precedence 45 for @{'eqP $A $B}. interpretation "extensional equality" 'eqP a b = (eqP ? a b). -- 2.39.2