-inductive cle (C:Class) (c1:C): C \to Prop \def
- | cle_refl: cin ? c1 \to cle ? c1 c1
- | ceq_sing: \forall c2,c3.
- cle ? c1 c2 \to cin ? c3 \to cle1 ? c2 c3 \to cle ? c1 c3.
+(* external universal quantification *)
+inductive call (C:Class) (P:C \to Prop) : Prop \def
+ | call_intro: (\forall c. cin ? c \to P c) \to call C P.
+
+inductive call2 (C1,C2:Class) (P:C1 \to C2 \to Prop) : Prop \def
+ | call2_intro:
+ (\forall c1,c2. cin ? c1 \to cin ? c2 \to P c1 c2) \to call2 C1 C2 P.
+
+(* notations **************************************************************)
+
+(*CSC: the URI must disappear: there is a bug now *)
+interpretation "external for all" 'xforall \eta.x =
+ (cic:/matita/PREDICATIVE-TOPOLOGY/class_defs/call.ind#xpointer(1/1) _ x).
+
+notation > "hvbox(\xforall ident i opt (: ty) break . p)"
+ right associative with precedence 20
+for @{ 'xforall ${default
+ @{\lambda ${ident i} : $ty. $p}
+ @{\lambda ${ident i} . $p}}}.
+
+(*CSC: the URI must disappear: there is a bug now *)
+interpretation "external for all 2" 'xforall2 \eta.x \eta.y =
+ (cic:/matita/PREDICATIVE-TOPOLOGY/class_defs/call2.ind#xpointer(1/1) _ _ x y).