9-crossing_non-alternating_3-symmetrical.svg
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| Description | A 9-crossing non-alternating knot with 3-fold rotational symmetry. (Compare the alternating symmetrical knot File:Knot-9crossings-symmetrical.svg ). | ||
| Date | (PostScript); 2013 (SVG) | ||
| Source |
This image first uploaded as a PNG to http://katlas.math.utoronto.ca/wiki/File:9crossings-symmetrical-nonalt.png Converted from the following vector PostScript source code: %!
306 396 translate .4 dup scale/x 240 3 sqrt div neg def
24 setlinewidth 1 setgray/A{-120 x 360 210 360 arc 0 x
240 0 180 arc 120 x 360 180 330 arc 60 10800 sqrt rlineto
gsave 60 setlinewidth 0 setgray stroke grestore stroke}def
A gsave 2{120 rotate A}repeat grestore 60 setlinewidth 0
setgray 3{-120 x 360 277 302 arc stroke 0 x 240 109 132
arc stroke 120 -120 x 360 218 210 arcn -15 15 3 sqrt mul
rlineto stroke rotate}repeat 0 x 240 170 180 arc 120 x 360
180 187 arc stroke 1 setgray 24 setlinewidth 3{-120 x 360
276 303 arc stroke 0 x 240 108 133 arc stroke -120 x 360
220 210 arcn -20 20 3 sqrt mul rlineto stroke 120 rotate}
repeat 0 x 240 160 180 arc 120 x 360 180 188 arc stroke
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| Author | AnonMoos | ||
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Permission
( Reusing this file ) |
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