359:#include "colors.inc" background { color White } global_settings { assumed_gamma 1.0} camera { location <0, 0, -25> right <1,0,0> up <0,1,0> look_at <0, 0, 0> angle 5 } light_source { <0, 20, -50> color White area_light <5, 0, 0>, <0, 5, 0>, 10, 10 adaptive 3 } #declare r_tube = 0.1; #declare num_steps = 72; #declare step_size = 1/num_steps; sphere_sweep { cubic_spline 27, #declare N = 8; #while(N <= 34) #declare theta = 2 * pi * N * step_size; <0.3*( 2*sin(2*theta)-sin(theta) ), 0.3*( 2*cos(2*theta)+cos(theta) ), 0.3*sin(3*theta)>, r_tube /* uses a hypotrochoid */ #declare N = N + 1; #end pigment { color rgb <0,0.75,0> } finish { ambient 0.15 diffuse 0.85 brilliance 2 phong 0.25 phong_size 5 } } sphere_sweep { cubic_spline 27, #declare N = 32; #while(N <= 58) #declare theta = 2 * pi * N * step_size; <0.3*( 2*sin(2*theta)-sin(theta) ), 0.3*( 2*cos(2*theta)+cos(theta) ), 0.3*sin(3*theta)>, r_tube /* uses a hypotrochoid */ #declare N = N + 1; #end pigment { color rgb <1,0,0> } finish { ambient 0.15 diffuse 0.85 brilliance 2 phong 0.25 phong_size 5 } } sphere_sweep { cubic_spline 27, #declare N = 56; #while(N <= 82) #declare theta = 2 * pi * N * step_size; <0.3*( 2*sin(2*theta)-sin(theta) ), 0.3*( 2*cos(2*theta)+cos(theta) ), 0.3*sin(3*theta)>, r_tube /* uses a hypotrochoid */ #declare N = N + 1; #end pigment { color rgb <0,0.25,1> } finish { ambient 0.15 diffuse 0.85 brilliance 2 phong 0.25 phong_size 5 } } plane { <0,0,-1>, -0.4 pigment { color White } finish { ambient 0.35 diffuse 0.65 } }
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This image was created using POV-Ray for
Windows, version 3.6. The image was rendered to an 1800 x 1800 square, using 0.3 anti-aliasing.
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746:{{Information |Description={{en|1=A tricolored trefoil knot.}} |Source=Own work by uploader |Author=
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I, the copyright holder of this work, release this work into the
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913:ויקיפדיה:מועדונים/חבורת אוילר/יבוא תמונה מתמטית מהויקי האנגלית
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In some countries this may not be legally possible; if so:
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Compressed with pngout. Reduced by 534kB (56% decrease).
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released into the public domain by the copyright holder
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Improved lighting and texture, increased resolution.
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Commons is a freely licensed media file repository.
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973:Шаблон:Test transclude/npc infobox below/old/test
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790:Portal:Mathematics/Featured picture archive
785:Portal:Mathematics/Featured picture/2010 10
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249:A tricolored trefoil knot.
863:Polynôme d'Alexander
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958:Стопорный узел Эшли
347:Original upload log
209:Original upload log
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838:گره سه پره-سه گانه
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145:Mathematics Portal
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943:Nó de trevo
923:彩色数 (結び目理論)
903:Nó de trevo
681:Cmdrjameson
237:Description
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843:گره سهپره
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27:File usage
933:삼색 칠하기 가능
646:Thumbnail
643:Date/Time
565:inception
288:Licensing
246:English:
199:Licensing
80:image/png
1024:Category
748:Jim.belk
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735:(163 KB)
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229:Summary
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305:false
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1003:3-色性
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255:Date
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1013:三叶结
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216:3.1
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
