doc-src/Tutorial/Misc/Tree.thy
author paulson
Tue, 29 Apr 2003 12:36:49 +0200
changeset 13935 4822d9597d1e
parent 5377 efb799c5ed3c
permissions -rw-r--r--
tweaks

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