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Re: [ontolog-forum] What words mean

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Christopher Menzel <cmenzel@xxxxxxxx>
Date: Sat, 23 Feb 2008 14:10:46 -0600
Message-id: <205A306D-B7FB-46AD-A7D2-6534C240CABA@xxxxxxxx>
> In a sense, trees are everywhere, whenever you deal with a  
> hierarchical order:
> 1. in order theory and set theory, the tree structure makes a  
> special kind of partial order;
> 2. in graph theory, it makes a connected acyclic graph, undirected  
> or directed;    (01)

As John originally noted, additional conditions are needed in the case  
of directed trees.    (02)

-chris    (03)

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