(* Title: Tree Automata
Author: Peter Lammich <peter dot lammich at uni-muenster.de>
Maintainer: Peter Lammich <peter dot lammich at uni-muenster.de>
*)
section "Trees"
theory Tree
imports Main
begin
text_raw ‹\label{sec:tree}›
text ‹
This theory defines trees as nodes with a label and a list of subtrees.
›
datatype 'l tree = NODE 'l "'l tree list"
datatype_compat tree
end
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