doc-src/Tutorial/Misc/Tree.thy
author nipkow
Tue, 04 Jul 2000 12:04:16 +0200
changeset 9242 c472ed4edded
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added a thm.

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