doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Wed, 05 Jan 2000 11:58:18 +0100
changeset 8102 424f6e663977
parent 5377 efb799c5ed3c
permissions -rw-r--r--
comment: any number of texts;

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