Uploads by AnonMoos

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Date Name Thumbnail Size Description Versions
00:58, 20 February 2010 Trefoil-triquetra-rhodonea-rose-limacon.png (file) 15 KB Trefoil knot generated from the polar coordinates equation r=b+sin(aθ), which is a slight generalization of the Limaçon and Rose/rhodonea curves, using parameters a=(3/5) and b=(8/5). For a similar looking visual rendering of the 3_1 knot, but made 1
17:10, 12 February 2010 9crossings-knot-symmetrical.png (file) 19 KB Self-made, declared to be in public domain, generated from a version of the following PostScript source code: <pre>%! 7 3.5 translate/r{rcurveto}def/h{closepath}def/m{moveto}def .2 dup scale 2154 734 m 0 267 -143 478 -310 617 r -77 447 -412 675 -746 675 1
07:29, 10 February 2010 Old German-army-generals-insignia.jpg (file) 17 KB Old German army general's insignia (shoulder epaulet with braid)... 1
07:27, 10 February 2010 4crossings-square-alternate.png (file) 519 bytes add color 2
07:27, 10 February 2010 4crossings-square.png (file) 567 bytes add color 2
01:05, 6 February 2010 Trefoil-Triquetra.png (file) 16 KB An architectural trefoil (i.e. symmetrical pattern of three partially-overlapping circles) which is also a triquetra (i.e. simple threefold closed knot). For non-interlaced architectural trefoil, see http://commons.wikimedia.org/wiki/File:Trefoil-Archite 1
06:26, 5 February 2010 Vodicka triquetra.png (file) 14 KB Quasi-Celtic triquetra by Petr Vodicka, released to public domain (see http://commons.wikimedia.org/wiki/File:Vodicka_triquetra1.svg ). 1
22:25, 3 February 2010 Trefoil-square.png (file) 336 bytes Square depiction of 3_1 knot. For a similar but more complex visual representation of a knot, see Image:10crossings square.png. Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 1 setgray 1
04:41, 3 February 2010 92-star-polygon-nonagram3.png (file) 10 KB Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 0 setgray 12 setlinewidth 1 1 8{80 mul 90 add/x exch def x 40 sub cos 45.3363 mul x 40 sub sin 45.3363 mul lineto x co 1
13:29, 2 February 2010 10crossings square.png (file) 378 bytes Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 1 setgray 18 setlinewidth/X{.5 add 72 mul exch .5 add 72 mul exch}def/l{X lineto}def 0 5 X moveto 0 2 l 5 2 l 5 3 l 1 3 l 1 1 l 4 1 l 4 4 l 2 4 l 2 0 1
13:24, 2 February 2010 10crossing-2trefoil.png (file) 16 KB round corners 2
11:57, 1 February 2010 72-star-polygon-septagram2.png (file) 10 KB Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 1 setgray 14 setlinewidth /A 720 7 div def 1 1 6{A mul 90 add/x exch def x cos 200 mul x sin 200 mul lineto}for closep 1
11:07, 1 February 2010 112-star-polygon-undecagram2.png (file) 13 KB Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 1 setgray 11 setlinewidth/A 720 11 div def 1 1 10{A mul 90 add/x exch def x A 2 div sub cos 98.761 mul x A 2 div sub s 1
11:05, 1 February 2010 92-star-polygon-nonagram2.png (file) 12 KB Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 1 setgray 12 setlinewidth 1 1 8{80 mul 90 add/x exch def x 40 sub cos 106.417777 mul x 40 sub sin 106.417777 mul linet 1
09:37, 1 February 2010 112-star-polygon-undecagram.png (file) 11 KB Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 1 setgray 11 setlinewidth/A 720 11 div def 1 1 10{A mul 90 add/x exch def x cos 200 mul x sin 200 mul lineto} for clos 1
09:08, 1 February 2010 72-star-polygon-septagram.png (file) 11 KB Self-made, declared to be in public domain. 1
08:53, 1 February 2010 92-star-polygon-nonagram.png (file) 11 KB Self-made graphic, declared to be public domain, converted from the following PostScript source code: <pre>%! 300 396 translate 0 200 moveto 1 setgray 12 setlinewidth 1 1 8{80 mul 90 add/x exch def x cos 200 mul x sin 200 mul lineto}for closepath gsave 0 1
07:38, 25 January 2010 Endless-knot-81-crossings.png (file) 7 KB Version of Endless knot symbol with 81 crossings (79 of which are structurally significant). Self-made image, declared to be public domain, generated from the following PostScript source: <pre>%! .5 dup scale 1 setgray 18 setlinewidth/X{.5 add 72 mul ex 1
07:36, 25 January 2010 Endless-knot-49-crossings.png (file) 4 KB Version of Endless knot symbol with 49 crossings (47 of which are structurally significant). Self-made image, declared to be public domain, generated from the following PostScript source: <pre>%! 2 3 div dup scale 1 setgray 18 setlinewidth/X{.5 add 72 m 1
11:35, 24 January 2010 Endless knot 23 crossings 25.png (file) 11 KB Form of "Endless Knot" symbol intermediate in complexity between basic 7_4 knot and the form seen in Image:Endless knot Red lacquerware dish Ming Dynasty.jpg . There are 25 crossings, 23 of which are structurally significant. Self-made graphic, 1
11:30, 24 January 2010 Endless knot Red lacquerware dish Ming Dynasty.jpg (file) 112 KB Detail of Chinese dish made of red lacquer over wood, from the Ming Dynasty, dated late 15th to mid 16th century, showing complex form of endless knot (a symbol of longevity in Chinese culture) at center. Knot has 49 crossings, 47 of which are structural 1
18:52, 23 January 2010 Three-loop-link-12-crossings-alternate.png (file) 9 KB Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 300 0 translate .5 dup scale 1 setgray /A {994 152 moveto 0 228 rlineto -152 0 rlineto 0 76 rlineto 152 0 rlineto 0 228 rlineto -152 0 rlineto 0 152 rlineto 1
17:31, 17 January 2010 12-crossings-squares-16.png (file) 1 KB 3-loop link with 16 crossings, only 12 of which are structurally significant. Topologically the same as Image:Celtic-knot-square-3loops.png... Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 1 setgr 1
11:18, 17 January 2010 Trefoil-in-trefoil.png (file) 18 KB Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 240 518 translate/z{20000 sqrt}def gsave .5 .5 scale z .5 mul 42 translate 24 setlinewidth .87 .97 .87 setrgbcolor 0 0 100 330 90 arcn z 0 100 90 210 arcn z 1
11:17, 17 January 2010 Six-rings.png (file) 17 KB Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate 90 rotate 12 setlinewidth 1 setgray /X{90 add dup cos 144 mul exch sin 144 mul 100}def 0 1 5{60 mul X 0 360 arc closepath gsave 0 setgray 2 1
11:12, 17 January 2010 Triquetra-tightly-knotted.png (file) 8 KB A form of the trefoil knot or triquetra 3_1. Self-made graphic, declared to be public domain (see http://commons.wikimedia.org/wiki/File:Triquetra-tightly-knotted.png ). 1
11:00, 17 January 2010 Triquetra-Vesica.png (file) 13 KB A form of the trefoil knot or triquetra 3_1. Self-made graphic, declared to be public domain (see http://commons.wikimedia.org/wiki/File:Triquetra-Vesica.png ). 1
10:57, 17 January 2010 Trefoil-triquetra-circular-arcs-around-triangle.png (file) 15 KB A form of the Triquetra symbol or trefoil knot with three 120° circular arcs grouped around an equilateral triangle. Self-made graphic, declared to public domain (see http://commons.wikimedia.org/wiki/File:Trefoil-triquetra-circular-arcs-around-triangle 1
08:58, 17 January 2010 Ccross-two-link.png (file) 16 KB Celtic-type two-loop link. By Petr Vodicka, placed by him in public domain (see http://commons.wikimedia.org/wiki/Image:Ccross.svg ). 1
08:56, 17 January 2010 Four-loop-interlaced-circle.png (file) 15 KB Four-loop interlaced with circle. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate 1.44 dup scale /D{0 setgray 24 setlinewidth}def /A{90 mul 45 add dup}def /X{A cos 102 mul exch sin 102 m 1
09:12, 16 January 2010 4squares-12crossings.png (file) 2 KB Configuration of four linked squares. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate/A{96 96 moveto 96 -96 lineto -96 -96 lineto -96 96 lineto closepath stroke}def 0 1 3{/x exch 90 mul 1
09:11, 16 January 2010 4squares-8crossings.png (file) 1 KB Configuration of four linked squares. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate/A{72 72 moveto 72 -72 lineto -72 -72 lineto -72 72 lineto closepath stroke}def 0 1 3{/x exch 90 mul 1
07:40, 16 January 2010 Celtic-knot-square-3loops.png (file) 15 KB Square quasi-Celtic link of three loops and 12 crossings. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate /z{20000 sqrt}def 24 setlinewidth 1 setgray /y{gsave 40 setlinewidth 0 setgray}d 1
07:38, 16 January 2010 Two-interlaced-hexagrams.png (file) 10 KB Two open hexagrams interlaced. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 306 396 translate 1 dup scale /A{0 100 3 sqrt mul moveto 0 1 5{/x exch 60 mul 30 add def x sin 100 mul x cos 100 mul lineto x 1
07:35, 16 January 2010 Three-L4a1-config.png (file) 18 KB Three-link loop with twelve crossings and three L4a1 configurations. Self-made, declared to be public domain. 1
07:31, 16 January 2010 Triquetra-double-interlaced.png (file) 14 KB Two mutually-interlaced triquetras. Self-made, declared to be public domain, see http://commons.wikimedia.org/wiki/File:Triquetra-Double.svg 1
22:32, 5 January 2010 L8a13-symm.png (file) 10 KB Symmetric depiction of L8a13. Self-made, declared to be public domain, generated from the following PostScript source: <pre>%! 300 300 translate .8 dup scale 45 rotate 1 setlinejoin 40 setlinewidth 0 1 1{pop -90 180 moveto -240 120 60 90 270 arc -210 60 1
14:10, 30 December 2009 L9a33-symm-circ-arcs-7enclosed.png (file) 14 KB Variant of Image:L9a33-symm-circ-arcs.png where the centers of the smaller partial circles are not on the circumference of the larger circle... Self-made, declared to be in public domain. 1
06:32, 29 December 2009 3Loops-Borromean-link.png (file) 1 KB Asymmetrical depiction of Borromean rings, in the style of Image:6Loops-Brunnian-link.png . This graphic self-made and declared to be in public domain (see http://commons.wikimedia.org/wiki/File:3Loops-Borromean-link.svg ). 1
07:27, 27 December 2009 Triquetra-circle-interlaced-7enclosed.png (file) 16 KB Alternative version of Triquetra interlaced with circle, without pointy corners. Self-made graphic, declared Public Domain, generated from the following PostScript: <pre>%! 306 396 translate/A{0 -41.77 100}def/B{1875 sqrt}def/C{3 sqrt}def/D{0 setgray 24 1
23:26, 26 December 2009 Triquetra-circle-interlaced-smootharcjoins.png (file) 16 KB Alternative version of Image:Triquetra-Interlaced-Triangle-Circle.png , without pointy corners or an enclosed central area. Self-made graphic, declared Public Domain, generated from the following PostScript: <pre>%! 306 396 translate 1.35 dup scale 1
09:32, 3 December 2009 6Loops-Brunnian-link.png (file) 985 bytes 6-loop Brunnian link — no two loops are directly linked, but all six are collectively linked, and cutting any loop frees all the other loops. Redrawn version of illustration in Hermann Brunn's 1892 article "Über Verkettung", by way of Dale Rolfsen's 1 1
06:33, 20 September 2009 CoA Guillerval Essonne France.png (file) 20 KB Coat of arms of Guillerval, Essonne, France. By "Spedona", see http://commons.wikimedia.org/wiki/File:Blason_ville_fr_Guillerval_(Essonne).svg 1
06:30, 20 September 2009 Borromean-three-rectangles-in-icosahedron.jpg (file) 29 KB Image of three rectangles linked as Borromean rings in three dimensions (an icosahedron can be drawn between the twelve corner points). By "Wxs", see http://commons.wikimedia.org/wiki/File:Borromean.jpg 1
12:32, 6 September 2009 L9a33-symm-circ-arcs-alt.png (file) 15 KB Self-made graphic, based on the following vector PostScript source code: <pre>%! 306 396 translate 1.35 dup scale/A{0 -41.77 100}def/B{1875 sqrt}def/C{3 sqrt}def/D{0 setgray 24 setlinewidth}def/E{12 setlinewidth 1 setgray}def E A 0 360 arc closepath gsav 1
03:17, 6 September 2009 L9a33-symm-circ-arcs.png (file) 15 KB self-made graphic 1
09:35, 3 September 2009 Solomons-knot-quadruple.png (file) 5 KB Decorative configuration of four loops, where each loop is connected to two other loops in the "Solomon's knot" configuration L4a1. Self-made graphic, declared to be in public domain (see http://commons.wikimedia.org/wiki/File:Solomons-knot-quadruple 1
20:52, 19 August 2009 5-link-closed-chain-knot-ornamental-quasi-yin-yang.png (file) 45 KB Highly decorative version of L10a174 as quasi-yin-yang shapes... Self-made graphic (see http://commons.wikimedia.org/wiki/File:Closed-five-link-chain-knots.svg ) 1
13:18, 17 August 2009 Borromean-chainmail2.png (file) 18 KB Self-made graphic of "Borromean chain-mail knot" made with same-size circles. 1
16:53, 15 August 2009 Interlaced-pentagrams.png (file) 10 KB Self-made graphic of two interlaced pentagrams 1
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