Decorative knot with nine crossings, depicted with three-fold symmetric interlacings inside an overall enclosing circle.  For a variant visual form of this, see <a rel="nofollow" class="external free" href="http://katlas.math.utoronto.ca/wiki/Image:9crossings-decorative-knot-threefold-incircle.png">http://katlas.math.utoronto.ca/wiki/Image:9crossings-decorative-knot-threefold-incircle.png</a> .  For other (topologically distinct) 9-crossing knots with three-fold symmetry, see <a href="//commons.wikimedia.org/wiki/File:Knot-9crossings-symmetrical.svg" title="File:Knot-9crossings-symmetrical.svg">File:knot-9crossings-symmetrical.svg</a>, <a href="//commons.wikimedia.org/wiki/File:9crossings-threesymmetric-other.svg" title="File:9crossings-threesymmetric-other.svg">File:9crossings-threesymmetric-other.svg</a> etc.  For a quasi-version of this image with fourfold symmetry, see <a href="//commons.wikimedia.org/wiki/File:Circular-cross-decorative-knot-12crossings.svg" title="File:Circular-cross-decorative-knot-12crossings.svg">File:Circular-cross-decorative-knot-12crossings.svg</a> .
AnonMoos
<p>Self-made graphic, converted from the following vector PostScript source code:
</p>
<pre>%!
306 396 translate .75 dup scale/X{30000 sqrt
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0 1 2{39.807692308 setlinewidth 0 setgray
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stroke grestore stroke 120 rotate}for
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39.807692308 setlinewidth 0 setgray
0 X 200 59 80 arc stroke
0 X 200 160 180 arc -250 X 50 360 359 arcn stroke
257.5 X 57.5 254 330 arc 0 0 Y 330 345 arc stroke
0 Y 57.5 sub 57.5 14 90 arc 0 0 Y 90 105 arc stroke
showpage
%EOF</pre>