doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Mon, 05 Jul 1999 09:52:25 +0200
changeset 6898 2650bd68c0ba
parent 5377 efb799c5ed3c
permissions -rw-r--r--
variant version;

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