changeset 29511 | 7071b017cb35 |
parent 29252 | ea97aa6aeba2 |
child 30729 | 461ee3e49ad3 |
--- a/src/HOLCF/CompactBasis.thy Fri Jan 16 14:58:12 2009 +0100 +++ b/src/HOLCF/CompactBasis.thy Fri Jan 16 14:58:56 2009 +0100 @@ -244,7 +244,7 @@ assumes "ab_semigroup_idem_mult f" shows "fold_pd g f (PDPlus t u) = f (fold_pd g f t) (fold_pd g f u)" proof - - class_interpret ab_semigroup_idem_mult [f] by fact + interpret ab_semigroup_idem_mult f by fact show ?thesis unfolding fold_pd_def Rep_PDPlus by (simp add: image_Un fold1_Un2) qed