changeset 58276 | aa1b6ea6a893 |
parent 58275 | 280ede57a6a9 |
child 58305 | 57752a91eec4 |
--- a/src/HOL/BNF_Least_Fixpoint.thy Tue Sep 09 20:51:36 2014 +0200 +++ b/src/HOL/BNF_Least_Fixpoint.thy Tue Sep 09 20:51:36 2014 +0200 @@ -16,9 +16,6 @@ "datatype_compat" :: thy_decl begin -ML {* proofs := 2 *} (*###*) -ML {* Proofterm.proofs_enabled () *} - lemma subset_emptyI: "(\<And>x. x \<in> A \<Longrightarrow> False) \<Longrightarrow> A \<subseteq> {}" by blast