A decorative form of the Borromean rings, but with elements which are not fully closed; this is occasionally called "Wayland's knot".
AnonMoos
<p>self-made (drawn from scratch based loosely on the depictions seen in the images at <a rel="nofollow" class="external free" href="http://www.math.toronto.edu/~drorbn/Talks/Oporto-0407/KnotsInLisboa.html">http://www.math.toronto.edu/~drorbn/Talks/Oporto-0407/KnotsInLisboa.html</a> and <a rel="nofollow" class="external free" href="http://www.mialagothic.co.uk/page27.htm">http://www.mialagothic.co.uk/page27.htm</a> ).
</p><p>Converted from the following PostScript vector source code:
</p>
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