tweaked definition of setclass
authorpaulson
Tue Jul 16 16:28:49 2002 +0200 (2002-07-16)
changeset 13362cd7f9ea58338
parent 13361 5005d34425bb
child 13363 c26eeb000470
tweaked definition of setclass
src/ZF/OrdQuant.thy
     1.1 --- a/src/ZF/OrdQuant.thy	Tue Jul 16 16:28:26 2002 +0200
     1.2 +++ b/src/ZF/OrdQuant.thy	Tue Jul 16 16:28:49 2002 +0200
     1.3 @@ -334,9 +334,10 @@
     1.4  subsubsection{*Sets as Classes*}
     1.5  
     1.6  constdefs setclass :: "[i,i] => o"       ("**_" [40] 40)
     1.7 -   "setclass(A,x) == x : A"
     1.8 +   "setclass(A) == %x. x : A"
     1.9  
    1.10 -declare setclass_def [simp]
    1.11 +lemma setclass_iff [simp]: "setclass(A,x) <-> x : A"
    1.12 +by (simp add: setclass_def)
    1.13  
    1.14  lemma rall_setclass_is_ball [simp]: "(\<forall>x[**A]. P(x)) <-> (\<forall>x\<in>A. P(x))"
    1.15  by auto