| changeset 16417 | 9bc16273c2d4 |
| parent 13535 | 007559e981c7 |
| child 18415 | eb68dc98bda2 |
--- a/src/ZF/Induct/Tree_Forest.thy Fri Jun 17 11:35:35 2005 +0200 +++ b/src/ZF/Induct/Tree_Forest.thy Fri Jun 17 16:12:49 2005 +0200 @@ -6,7 +6,7 @@ header {* Trees and forests, a mutually recursive type definition *} -theory Tree_Forest = Main: +theory Tree_Forest imports Main begin subsection {* Datatype definition *}