changeset 20648 | 742c30fc3fcb |
parent 18492 | b0fe60800623 |
child 21588 | cd0dc678a205 |
--- a/src/HOL/Auth/Message.thy Wed Sep 20 14:02:41 2006 +0200 +++ b/src/HOL/Auth/Message.thy Wed Sep 20 15:11:46 2006 +0200 @@ -941,8 +941,7 @@ "X \<in> synth (analz H) ==> parts{X} \<subseteq> synth (analz H) \<union> parts H"; apply (rule subset_trans) apply (erule_tac [2] Fake_parts_insert) -apply (rule parts_mono) -apply (blast intro: elim:); +apply (rule parts_mono, blast) done lemmas Fake_parts_sing_imp_Un = Fake_parts_sing [THEN [2] rev_subsetD]