rer to the invariant idea, by leaving
the coordinates off.

Many Regards,

Jon Awbrey

¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤

</PRE>

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<ul><li><strong>References</strong>:
<ul>
<li><strong><a name="02267" href="msg02267.html">SUO: RE: Re: Graphs, Hypergraphs, Relations, Spans</a></strong>
<ul><li><em>From:</em> &quot;robert marty&quot; &lt;marty@univ-perp.fr&gt;</li></ul>