doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Mon, 11 Dec 2000 20:08:19 +0100
changeset 10639 f902346264e9
parent 5377 efb799c5ed3c
permissions -rw-r--r--
harpoons;

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