doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Tue, 29 Aug 2000 00:54:22 +0200
changeset 9712 e33422a2eb9c
parent 5377 efb799c5ed3c
permissions -rw-r--r--
updated cong stuff;

Tree = Main +
datatype 'a tree = Tip | Node ('a tree) 'a ('a tree)
end