doc-src/Tutorial/Misc/Tree.thy
author paulson
Fri, 23 Oct 1998 16:46:33 +0200
changeset 5745 a53ffabc6804
parent 5377 efb799c5ed3c
permissions -rw-r--r--
updated as requested by Markus

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