From a4c7f8bd98be2a200489325ff7c5061cf80ab4f3 Mon Sep 17 00:00:00 2001 From: Enrico Tassi Date: Tue, 27 Dec 2016 16:53:30 +0100 Subject: Imported Upstream version 8.6 --- theories/Classes/RelationPairs.v | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'theories/Classes/RelationPairs.v') diff --git a/theories/Classes/RelationPairs.v b/theories/Classes/RelationPairs.v index cbde5f9a..8d1c4982 100644 --- a/theories/Classes/RelationPairs.v +++ b/theories/Classes/RelationPairs.v @@ -43,6 +43,9 @@ Generalizable Variables A B RA RB Ri Ro f. Definition RelCompFun {A} {B : Type}(R:relation B)(f:A->B) : relation A := fun a a' => R (f a) (f a'). +(** Instances on RelCompFun must match syntactically *) +Typeclasses Opaque RelCompFun. + Infix "@@" := RelCompFun (at level 30, right associativity) : signature_scope. Notation "R @@1" := (R @@ Fst)%signature (at level 30) : signature_scope. @@ -65,6 +68,8 @@ Instance snd_measure : @Measure (A * B) B Snd. Definition RelProd {A : Type} {B : Type} (RA:relation A)(RB:relation B) : relation (A*B) := relation_conjunction (@RelCompFun (A * B) A RA fst) (RB @@2). +Typeclasses Opaque RelProd. + Infix "*" := RelProd : signature_scope. Section RelCompFun_Instances. -- cgit v1.2.3