doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Fri, 14 Jun 2002 13:24:32 +0200
changeset 13213 833ffcb2e92d
parent 5377 efb799c5ed3c
permissions -rw-r--r--
IsarTut;

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