File:Celtic-knot-simple-linear.gif

Another simple form of a Celtic or pseudo-Celtic linear ornamental knot. Alternating 10-crossing two-loop link L10a101. Self-made (see http://commons.wikimedia.org/wiki/Image:Celtic-knot-basic-linear.png ), declared to be in public domain, generated from a version of the following PostScript source code:

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1 setlinejoin/z{20000 sqrt}def/y{gsave 40 setlinewidth
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z 1.5 mul z -2 div 100 45 -15 arcn
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z -2 div z -2 div 100 135 195 arc
z neg 0 100 255 315 arc closepath
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z 0 100 225 315 arc z 1.5 mul z 2 div 100 -45 15 arc
z 2 mul 0 100 75 135 arc 0 0 100 315 225 arcn
z -2 div z 2 div 100 225 165 arcn
z neg 0 100 105 45 arcn closepath
y stroke grestore stroke grestore y
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z 0 100 91 135 arc -30 -30 rlineto stroke
z neg 0 100 271 315 arc 30 30 rlineto stroke
z 1.5 mul z -2 div 100 16 45 arc -30 30 rlineto stroke
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z 0 100 90 135 arc -31 -31 rlineto stroke
z neg 0 100 270 315 arc 31 31 rlineto stroke
z 1.5 mul z -2 div 100 15 45 arc -31 31 rlineto stroke
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.87 .97 .87 setrgbcolor
0 0 100 270 315 arc 31 31 rlineto stroke showpage
%EOF