doc-src/Tutorial/Misc/Tree.thy
author wenzelm
Sat, 01 Jul 2000 19:49:20 +0200
changeset 9226 cbe6144f0f15
parent 5377 efb799c5ed3c
permissions -rw-r--r--
tuned;

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