doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Tue, 09 Mar 1999 12:12:45 +0100
changeset 6324 3b7111b360b1
parent 5377 efb799c5ed3c
permissions -rw-r--r--
HTML markup elements.

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