File:12crossings-4symmetrical-square.svg
Summary
| Description | Decorative knot with twelve crossings, depicted with four-fold symmetry. This is topologically equivalent to File:12crossings-fourfold-symmetric.svg and File:Circular-cross-decorative-knot-12crossings.svg (see http://katlas.math.toronto.edu/wiki/K12a975 ), but only uses orthogonal straight lines. |
| Date | |
| Source |
Self-made graphic, converted from the following vector PostScript source code: %!
18 setlinewidth .92 .96 1 setrgbcolor/X{.5 add 72 mul exch .5
add 72 mul exch}def/l{X lineto}def 7 6 X moveto 2 6 l 2 4 l 5
4 l 5 7 l 1 7 l 1 2 l 3 2 l 3 5 l 0 5 l 0 1 l 5 1 l 5 3 l 2 3
l 2 0 l 6 0 l 6 5 l 4 5 l 4 2 l 7 2 l closepath gsave 0
setgray 36 setlinewidth stroke grestore stroke .92 .96 1
setrgbcolor/r{72 mul exch 72 mul exch rlineto}def 36
setlinewidth 0 setgray 4.5 6 X moveto 1 0 r stroke 1 4.5 X
moveto 0 1 r stroke 1.5 5 X moveto 1 0 r stroke 2.5 4 X
moveto 1 0 r stroke 6 1.5 X moveto 0 1 r stroke 1.5 1 X
moveto 1 0 r stroke 3.5 3 X moveto 1 0 r stroke 4.5 2 X
moveto 1 0 r stroke 2 1.5 X moveto 0 1 r stroke 3 2.5 X
moveto 0 1 r stroke 4 3.5 X moveto 0 1 r stroke 5 4.5 X
moveto 0 1 r stroke .92 .96 1 setrgbcolor 18 setlinewidth
4.48 6 X moveto 1.04 0 r stroke 1 4.48 X moveto 0 1.04 r
stroke 1.48 5 X moveto 1.04 0 r stroke 2.48 4 X moveto 1.04 0
r stroke 6 1.48 X moveto 0 1.04 r stroke 1.48 1 X moveto 1.04
0 r stroke 3.48 3 X moveto 1.04 0 r stroke 4.48 2 X moveto
1.04 0 r stroke 2 1.48 X moveto 0 1.04 r stroke 3 2.48 X
moveto 0 1.04 r stroke 4 3.48 X moveto 0 1.04 r stroke 5 4.48
X moveto 0 1.04 r stroke showpage
%EOF |
| Author | AnonMoos |
Licensing
 |
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
