author | webertj |
Thu, 26 Aug 2004 17:28:57 +0200 | |
changeset 15161 | 065ce5385a06 |
parent 15160 | 394fb9b8908b |
child 15162 | 670ab8497818 |
--- a/src/HOL/ex/Refute_Examples.thy Tue Aug 24 17:55:24 2004 +0200 +++ b/src/HOL/ex/Refute_Examples.thy Thu Aug 26 17:28:57 2004 +0200 @@ -455,8 +455,9 @@ subsection {* Subtypes (typedef), typedecl *} +text {* A completely unspecified non-empty subset of @{typ "'a"}: *} + typedef 'a myTdef = "insert (arbitrary::'a) (arbitrary::'a set)" - -- {* a completely unspecified non-empty subset of @{typ "'a"} *} by auto lemma "(x::'a myTdef) = y"