https://katlas.org/index.php?action=history&feed=atom&title=File%3AImpossible_trefoil_knot_Isometric.png 2026-06-25T11:08:42Z Revision history for this page on the wiki MediaWiki 1.39.6 https://katlas.org/index.php?title=File:Impossible_trefoil_knot_Isometric.png&diff=1712782&oldid=prev 2011-06-07T22:52:11Z

<p>simpler source</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:52, 7 June 2011</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 6:</td> <td colspan="2" class="diff-lineno">Line 6:</td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add</div></td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth</div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth<ins style="font-weight: bold; text-decoration: none;"> 1</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">1 </del>setlinejoin stroke 9 setlinewidth<del style="font-weight: bold; text-decoration: none;"> 2</del> 1<del style="font-weight: bold; text-decoration: none;">.75</del> X moveto <del style="font-weight: bold; text-decoration: none;">2</del> .25 l</div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>setlinejoin stroke 9 setlinewidth 1<ins style="font-weight: bold; text-decoration: none;"> 0</ins> X moveto <ins style="font-weight: bold; text-decoration: none;">.75</ins> <ins style="font-weight: bold; text-decoration: none;">-</ins>.25 l<ins style="font-weight: bold; text-decoration: none;"> 2 -.25</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">1.75</del> .25 l <del style="font-weight: bold; text-decoration: none;">1.75 1.75 l</del> gsave <del style="font-weight: bold; text-decoration: none;">0</del> 1 0 setrgbcolor fill grestore</div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">l</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins>.25<ins style="font-weight: bold; text-decoration: none;"> 0</ins> l <ins style="font-weight: bold; text-decoration: none;">closepath</ins> gsave <ins style="font-weight: bold; text-decoration: none;">1</ins> 1 0 setrgbcolor fill grestore<ins style="font-weight: bold; text-decoration: none;"> stroke</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">stroke</del> <del style="font-weight: bold; text-decoration: none;">2.6 2</del> X moveto <del style="font-weight: bold; text-decoration: none;">1</del>.25 <del style="font-weight: bold; text-decoration: none;">2</del> l <del style="font-weight: bold; text-decoration: none;">1.25</del> <del style="font-weight: bold; text-decoration: none;">1</del>.<del style="font-weight: bold; text-decoration: none;">4</del> l <del style="font-weight: bold; text-decoration: none;">1</del> 1<del style="font-weight: bold; text-decoration: none;">.4</del> l 1 <del style="font-weight: bold; text-decoration: none;">2.25</del> <del style="font-weight: bold; text-decoration: none;">l 2.6</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">0</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins> X moveto <ins style="font-weight: bold; text-decoration: none;">-</ins>.25 <ins style="font-weight: bold; text-decoration: none;">.75</ins> l <ins style="font-weight: bold; text-decoration: none;">3</ins> .<ins style="font-weight: bold; text-decoration: none;">75</ins> l <ins style="font-weight: bold; text-decoration: none;">3.25</ins> 1 l<ins style="font-weight: bold; text-decoration: none;"> closepath gsave</ins> 1 <ins style="font-weight: bold; text-decoration: none;">1</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins></div></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_10_0_rhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_2_0_lhs"></a><del style="font-weight: bold; text-decoration: none;">2.25 l</del> gsave 0 .25 1 setrgbcolor fill grestore stroke <del style="font-weight: bold; text-decoration: none;">2.25 0.4 X</del></div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_5_0_rhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_2_1_lhs"></a><del style="font-weight: bold; text-decoration: none;">moveto 2.25</del> 1.<del style="font-weight: bold; text-decoration: none;">6 l 2</del> 1.<del style="font-weight: bold; text-decoration: none;">6</del> l <del style="font-weight: bold; text-decoration: none;">2 0.4 l</del> gsave 0 .<del style="font-weight: bold; text-decoration: none;">25</del> <del style="font-weight: bold; text-decoration: none;">1</del> setrgbcolor fill</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_7_0_rhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_2_2_lhs"></a><del style="font-weight: bold; text-decoration: none;">grestore </del>stroke <del style="font-weight: bold; text-decoration: none;">1</del> <del style="font-weight: bold; text-decoration: none;">0</del> X moveto <del style="font-weight: bold; text-decoration: none;">.75</del> <del style="font-weight: bold; text-decoration: none;">-</del>.25 l 2 <del style="font-weight: bold; text-decoration: none;">-</del>.25 l 2.<del style="font-weight: bold; text-decoration: none;">25</del> <del style="font-weight: bold; text-decoration: none;">0</del> l</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>closepath gsave 1 1 0 setrgbcolor fill grestore stroke 0 1 X</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>moveto -.25 .75 l 3 .75 l 3.25 1 l closepath gsave 1 1 0</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75</div></td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore</div></td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>gsave 1 1 0 setrgbcolor fill grestore stroke .25<del style="font-weight: bold; text-decoration: none;"> 1</del> X moveto <del style="font-weight: bold; text-decoration: none;">1.6</del> 1</div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>gsave 1 1 0 setrgbcolor fill grestore stroke <ins style="font-weight: bold; text-decoration: none;">0 3</ins>.25 X moveto <ins style="font-weight: bold; text-decoration: none;">0</ins> 1</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>l <del style="font-weight: bold; text-decoration: none;">1</del>.<del style="font-weight: bold; text-decoration: none;">6</del> <del style="font-weight: bold; text-decoration: none;">1</del>.<del style="font-weight: bold; text-decoration: none;">25</del> l .25 <del style="font-weight: bold; text-decoration: none;">1.25</del> l gsave 0 .<del style="font-weight: bold; text-decoration: none;">25</del> <del style="font-weight: bold; text-decoration: none;">1</del> setrgbcolor fill<del style="font-weight: bold; text-decoration: none;"> grestore</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>l <ins style="font-weight: bold; text-decoration: none;">-</ins>.<ins style="font-weight: bold; text-decoration: none;">25</ins> .<ins style="font-weight: bold; text-decoration: none;">75</ins> l <ins style="font-weight: bold; text-decoration: none;">-</ins>.25 <ins style="font-weight: bold; text-decoration: none;">3</ins> l<ins style="font-weight: bold; text-decoration: none;"> closepath</ins> gsave 0 .<ins style="font-weight: bold; text-decoration: none;">94</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins> setrgbcolor fill</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>stroke <del style="font-weight: bold; text-decoration: none;">0</del> <del style="font-weight: bold; text-decoration: none;">3</del>.<del style="font-weight: bold; text-decoration: none;">25</del> X moveto <del style="font-weight: bold; text-decoration: none;">0</del> <del style="font-weight: bold; text-decoration: none;">1</del> l <del style="font-weight: bold; text-decoration: none;">-</del>.<del style="font-weight: bold; text-decoration: none;">25</del> .<del style="font-weight: bold; text-decoration: none;">75</del> l <del style="font-weight: bold; text-decoration: none;">-</del>.<del style="font-weight: bold; text-decoration: none;">25</del> <del style="font-weight: bold; text-decoration: none;">3</del> l<del style="font-weight: bold; text-decoration: none;"> closepath gsave</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">grestore </ins>stroke <ins style="font-weight: bold; text-decoration: none;">2</ins> .<ins style="font-weight: bold; text-decoration: none;">75</ins> X moveto <ins style="font-weight: bold; text-decoration: none;">2</ins> <ins style="font-weight: bold; text-decoration: none;">.25</ins> l <ins style="font-weight: bold; text-decoration: none;">1</ins>.<ins style="font-weight: bold; text-decoration: none;">75</ins> .<ins style="font-weight: bold; text-decoration: none;">25</ins> l <ins style="font-weight: bold; text-decoration: none;">1</ins>.<ins style="font-weight: bold; text-decoration: none;">75</ins> <ins style="font-weight: bold; text-decoration: none;">.75</ins> l</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>0 <del style="font-weight: bold; text-decoration: none;">1</del> 0 setrgbcolor fill grestore stroke 1 2.25 X<del style="font-weight: bold; text-decoration: none;"> moveto 1 0 l .75</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">closepath gsave </ins>0 <ins style="font-weight: bold; text-decoration: none;">.94</ins> 0 setrgbcolor fill grestore stroke 1 2.25 X</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>-.25 l .75 2 l closepath gsave 0 <del style="font-weight: bold; text-decoration: none;">1</del> 0<del style="font-weight: bold; text-decoration: none;"> setrgbcolor fill grestore</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">moveto 1 0 l .75 </ins>-.25 l .75 2 l closepath gsave 0 <ins style="font-weight: bold; text-decoration: none;">.94</ins> 0</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>stroke 2 1.<del style="font-weight: bold; text-decoration: none;">5</del> X moveto 2 3 l 1.75 2.75<del style="font-weight: bold; text-decoration: none;"> l 1.75 1.25 l gsave 0 1 0</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">setrgbcolor fill grestore </ins>stroke 2 1.<ins style="font-weight: bold; text-decoration: none;">25</ins> X moveto 2 3 l 1.75 2.75</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_2_1_lhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_5_0_rhs"></a><ins style="font-weight: bold; text-decoration: none;">l</ins> 1.<ins style="font-weight: bold; text-decoration: none;">75</ins> 1.<ins style="font-weight: bold; text-decoration: none;">25</ins> l <ins style="font-weight: bold; text-decoration: none;">closepath</ins> gsave 0 .<ins style="font-weight: bold; text-decoration: none;">94</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins> setrgbcolor fill<ins style="font-weight: bold; text-decoration: none;"> grestore</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>setrgbcolor fill grestore stroke 3 2 X moveto 3 1.25 l 2.75 1.25</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_2_2_lhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_7_0_rhs"></a>stroke <ins style="font-weight: bold; text-decoration: none;">3</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins> X moveto <ins style="font-weight: bold; text-decoration: none;">3</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 l 2<ins style="font-weight: bold; text-decoration: none;">.75</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 l 2.<ins style="font-weight: bold; text-decoration: none;">75</ins> <ins style="font-weight: bold; text-decoration: none;">1.75</ins> l<ins style="font-weight: bold; text-decoration: none;"> closepath</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>l 2.75 1.75 l closepath gsave 0 1 0 setrgbcolor fill grestore</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">stroke</del> <del style="font-weight: bold; text-decoration: none;">2.25</del> <del style="font-weight: bold; text-decoration: none;">1</del>.<del style="font-weight: bold; text-decoration: none;">5</del> <del style="font-weight: bold; text-decoration: none;">X</del> <del style="font-weight: bold; text-decoration: none;">moveto</del> <del style="font-weight: bold; text-decoration: none;">2.25</del> <del style="font-weight: bold; text-decoration: none;">3.25</del> <del style="font-weight: bold; text-decoration: none;">l</del> <del style="font-weight: bold; text-decoration: none;">0 3</del>.25<del style="font-weight: bold; text-decoration: none;"> l 0</del> 1<del style="font-weight: bold; text-decoration: none;"> l </del>.<del style="font-weight: bold; text-decoration: none;">5</del> <del style="font-weight: bold; text-decoration: none;">1</del> <del style="font-weight: bold; text-decoration: none;">l .5</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">gsave</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins> .<ins style="font-weight: bold; text-decoration: none;">94</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins> <ins style="font-weight: bold; text-decoration: none;">setrgbcolor</ins> <ins style="font-weight: bold; text-decoration: none;">fill</ins> <ins style="font-weight: bold; text-decoration: none;">grestore</ins> <ins style="font-weight: bold; text-decoration: none;">stroke</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins>.25 1.<ins style="font-weight: bold; text-decoration: none;">25</ins> <ins style="font-weight: bold; text-decoration: none;">X</ins> <ins style="font-weight: bold; text-decoration: none;">moveto</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">1</del>.25 <del style="font-weight: bold; text-decoration: none;">l </del>.25 <del style="font-weight: bold; text-decoration: none;">1</del>.25 l <del style="font-weight: bold; text-decoration: none;">.25</del> <del style="font-weight: bold; text-decoration: none;">3</del> l <del style="font-weight: bold; text-decoration: none;">2</del> <del style="font-weight: bold; text-decoration: none;">3</del> l <del style="font-weight: bold; text-decoration: none;">2</del> 1.<del style="font-weight: bold; text-decoration: none;">5</del> l <del style="font-weight: bold; text-decoration: none;">gsave</del> <del style="font-weight: bold; text-decoration: none;">0</del> .25 <del style="font-weight: bold; text-decoration: none;">1</del> <del style="font-weight: bold; text-decoration: none;">setrgbcolor</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2</ins>.25 <ins style="font-weight: bold; text-decoration: none;">3</ins>.25 <ins style="font-weight: bold; text-decoration: none;">l 0 3</ins>.25 l <ins style="font-weight: bold; text-decoration: none;">0</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins> l <ins style="font-weight: bold; text-decoration: none;">.75</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins> l <ins style="font-weight: bold; text-decoration: none;">.75</ins> 1.<ins style="font-weight: bold; text-decoration: none;">25</ins> l <ins style="font-weight: bold; text-decoration: none;">.25</ins> <ins style="font-weight: bold; text-decoration: none;">1.25 l</ins> .25 <ins style="font-weight: bold; text-decoration: none;">3</ins> <ins style="font-weight: bold; text-decoration: none;">l</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">fill</del> <del style="font-weight: bold; text-decoration: none;">grestore</del> <del style="font-weight: bold; text-decoration: none;">stroke</del> 2<del style="font-weight: bold; text-decoration: none;">.4</del> <del style="font-weight: bold; text-decoration: none;">2</del>.25 <del style="font-weight: bold; text-decoration: none;">X</del> <del style="font-weight: bold; text-decoration: none;">moveto</del> <del style="font-weight: bold; text-decoration: none;">3.25</del> <del style="font-weight: bold; text-decoration: none;">2.25</del> <del style="font-weight: bold; text-decoration: none;">l 3</del>.25 1 <del style="font-weight: bold; text-decoration: none;">l</del> <del style="font-weight: bold; text-decoration: none;">1.4</del> <del style="font-weight: bold; text-decoration: none;">1</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">2</ins> <ins style="font-weight: bold; text-decoration: none;">3</ins> <ins style="font-weight: bold; text-decoration: none;">l</ins> 2 <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 <ins style="font-weight: bold; text-decoration: none;">l</ins> <ins style="font-weight: bold; text-decoration: none;">closepath</ins> <ins style="font-weight: bold; text-decoration: none;">gsave</ins> <ins style="font-weight: bold; text-decoration: none;">0</ins> .25 1 <ins style="font-weight: bold; text-decoration: none;">setrgbcolor</ins> <ins style="font-weight: bold; text-decoration: none;">fill</ins> <ins style="font-weight: bold; text-decoration: none;">grestore</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">l</del> <del style="font-weight: bold; text-decoration: none;">1</del>.<del style="font-weight: bold; text-decoration: none;">4</del> <del style="font-weight: bold; text-decoration: none;">1</del>.25 <del style="font-weight: bold; text-decoration: none;">l</del> 3 <del style="font-weight: bold; text-decoration: none;">1</del>.25 l 3 <del style="font-weight: bold; text-decoration: none;">2</del> l <del style="font-weight: bold; text-decoration: none;">2</del>.<del style="font-weight: bold; text-decoration: none;">4</del> <del style="font-weight: bold; text-decoration: none;">2</del> l <del style="font-weight: bold; text-decoration: none;">gsave 0 </del>.25 1<del style="font-weight: bold; text-decoration: none;"> setrgbcolor</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">stroke</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins>.<ins style="font-weight: bold; text-decoration: none;">25</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins>.25 <ins style="font-weight: bold; text-decoration: none;">X moveto</ins> 3<ins style="font-weight: bold; text-decoration: none;">.25</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins>.25 l 3<ins style="font-weight: bold; text-decoration: none;">.25</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins> l <ins style="font-weight: bold; text-decoration: none;">1</ins>.<ins style="font-weight: bold; text-decoration: none;">25</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins> l <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 1<ins style="font-weight: bold; text-decoration: none;">.25</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">fill</del> <del style="font-weight: bold; text-decoration: none;">grestore</del> <del style="font-weight: bold; text-decoration: none;">stroke 2 0</del>.<del style="font-weight: bold; text-decoration: none;">6</del> <del style="font-weight: bold; text-decoration: none;">X</del> <del style="font-weight: bold; text-decoration: none;">moveto</del> 2<del style="font-weight: bold; text-decoration: none;"> .25</del> l <del style="font-weight: bold; text-decoration: none;">1</del>.25 <del style="font-weight: bold; text-decoration: none;">.25</del> l <del style="font-weight: bold; text-decoration: none;">1</del>.25 1<del style="font-weight: bold; text-decoration: none;">.6</del> <del style="font-weight: bold; text-decoration: none;">l</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">l</ins> <ins style="font-weight: bold; text-decoration: none;">3</ins> <ins style="font-weight: bold; text-decoration: none;">1</ins>.<ins style="font-weight: bold; text-decoration: none;">25</ins> <ins style="font-weight: bold; text-decoration: none;">l</ins> <ins style="font-weight: bold; text-decoration: none;">3</ins> 2 l <ins style="font-weight: bold; text-decoration: none;">2</ins>.25 <ins style="font-weight: bold; text-decoration: none;">2</ins> l <ins style="font-weight: bold; text-decoration: none;">closepath gsave 0 </ins>.25 1 <ins style="font-weight: bold; text-decoration: none;">setrgbcolor</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">1</del> <del style="font-weight: bold; text-decoration: none;">1.6</del> <del style="font-weight: bold; text-decoration: none;">l</del> <del style="font-weight: bold; text-decoration: none;">1</del> 0 <del style="font-weight: bold; text-decoration: none;">l</del> 2.25<del style="font-weight: bold; text-decoration: none;"> 0</del> l <del style="font-weight: bold; text-decoration: none;">2</del>.25 <del style="font-weight: bold; text-decoration: none;">0</del>.<del style="font-weight: bold; text-decoration: none;">6</del> l <del style="font-weight: bold; text-decoration: none;">gsave 0 </del>.25 <del style="font-weight: bold; text-decoration: none;">1</del> <del style="font-weight: bold; text-decoration: none;">setrgbcolor fill</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">fill</ins> <ins style="font-weight: bold; text-decoration: none;">grestore</ins> <ins style="font-weight: bold; text-decoration: none;">stroke</ins> <ins style="font-weight: bold; text-decoration: none;">2</ins> 0<ins style="font-weight: bold; text-decoration: none;">.75</ins> <ins style="font-weight: bold; text-decoration: none;">X moveto</ins> 2<ins style="font-weight: bold; text-decoration: none;"> </ins>.25 l <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 .<ins style="font-weight: bold; text-decoration: none;">25</ins> l <ins style="font-weight: bold; text-decoration: none;">1</ins>.25 <ins style="font-weight: bold; text-decoration: none;">2</ins> <ins style="font-weight: bold; text-decoration: none;">l</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">grestore stroke</del> 2 1.<del style="font-weight: bold; text-decoration: none;">6</del> <del style="font-weight: bold; text-decoration: none;">X</del> <del style="font-weight: bold; text-decoration: none;">moveto</del> 2 1<del style="font-weight: bold; text-decoration: none;">.4</del> l <del style="font-weight: bold; text-decoration: none;">stroke</del> 2.25 .<del style="font-weight: bold; text-decoration: none;">7</del> <del style="font-weight: bold; text-decoration: none;">X moveto</del></div></td> <td class="diff-marker" data-marker="+"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">1.75</ins> 2<ins style="font-weight: bold; text-decoration: none;"> l</ins> 1.<ins style="font-weight: bold; text-decoration: none;">75</ins> <ins style="font-weight: bold; text-decoration: none;">2.25</ins> <ins style="font-weight: bold; text-decoration: none;">l 1</ins> 2<ins style="font-weight: bold; text-decoration: none;">.25 l</ins> 1<ins style="font-weight: bold; text-decoration: none;"> 0</ins> l <ins style="font-weight: bold; text-decoration: none;">2.25 0 l</ins> 2.25 <ins style="font-weight: bold; text-decoration: none;">0</ins>.<ins style="font-weight: bold; text-decoration: none;">75</ins> <ins style="font-weight: bold; text-decoration: none;">l</ins></div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_2_0_lhs">&#x26AB;</a></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_10_0_rhs"></a><ins style="font-weight: bold; text-decoration: none;">closepath</ins> gsave 0 .25 1 setrgbcolor fill grestore stroke <ins style="font-weight: bold; text-decoration: none;">showpage</ins></div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>2.25 .5 l stroke 2.3 2 X moveto 2.5 2 l stroke 22.5 setlinewidth</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>0 .25 1 setrgbcolor 1.125 1.45 X moveto 1.125 1.75 l stroke .6</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>1.125 X moveto .4 1.125 l stroke 1.5 1.125 X moveto 1.334 1.125 l</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>stroke 4.5 setlinewidth 1.4 1.19286 X moveto 1.34 1.19286 l</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>stroke showpage</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>%EOF&lt;/pre&gt;</div></td> <td class="diff-marker"></td> <td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>%EOF&lt;/pre&gt;</div></td> </tr> </table>

AnonMoos https://katlas.org/index.php?title=File:Impossible_trefoil_knot_Isometric.png&diff=1712777&oldid=prev 2011-06-03T03:39:25Z

<p>Trefoil (three-crossing) knot of mathematical knot theory, depicted as an impossible object, shown in isometric projection pseudo-perspective. Self-made, declared to be in public domain, generated from the following PostScript source code: &lt;pre&gt;%! 300 33</p> <p><b>New page</b></p><div>Trefoil (three-crossing) knot of mathematical knot theory, depicted as an impossible object, shown in isometric projection pseudo-perspective.<br /> <br /> Self-made, declared to be in public domain, generated from the following PostScript source code:<br /> &lt;pre&gt;%!<br /> 300 335 translate .6 dup scale 180 rotate 9 setlinewidth/X{exch<br /> dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add<br /> 15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3<br /> 2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth<br /> 1 setlinejoin stroke 9 setlinewidth 2 1.75 X moveto 2 .25 l<br /> 1.75 .25 l 1.75 1.75 l gsave 0 1 0 setrgbcolor fill grestore<br /> stroke 2.6 2 X moveto 1.25 2 l 1.25 1.4 l 1 1.4 l 1 2.25 l 2.6<br /> 2.25 l gsave 0 .25 1 setrgbcolor fill grestore stroke 2.25 0.4 X<br /> moveto 2.25 1.6 l 2 1.6 l 2 0.4 l gsave 0 .25 1 setrgbcolor fill<br /> grestore stroke 1 0 X moveto .75 -.25 l 2 -.25 l 2.25 0 l<br /> closepath gsave 1 1 0 setrgbcolor fill grestore stroke 0 1 X<br /> moveto -.25 .75 l 3 .75 l 3.25 1 l closepath gsave 1 1 0<br /> setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75<br /> 1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore<br /> stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath<br /> gsave 1 1 0 setrgbcolor fill grestore stroke .25 1 X moveto 1.6 1<br /> l 1.6 1.25 l .25 1.25 l gsave 0 .25 1 setrgbcolor fill grestore<br /> stroke 0 3.25 X moveto 0 1 l -.25 .75 l -.25 3 l closepath gsave<br /> 0 1 0 setrgbcolor fill grestore stroke 1 2.25 X moveto 1 0 l .75<br /> -.25 l .75 2 l closepath gsave 0 1 0 setrgbcolor fill grestore<br /> stroke 2 1.5 X moveto 2 3 l 1.75 2.75 l 1.75 1.25 l gsave 0 1 0<br /> setrgbcolor fill grestore stroke 3 2 X moveto 3 1.25 l 2.75 1.25<br /> l 2.75 1.75 l closepath gsave 0 1 0 setrgbcolor fill grestore<br /> stroke 2.25 1.5 X moveto 2.25 3.25 l 0 3.25 l 0 1 l .5 1 l .5<br /> 1.25 l .25 1.25 l .25 3 l 2 3 l 2 1.5 l gsave 0 .25 1 setrgbcolor<br /> fill grestore stroke 2.4 2.25 X moveto 3.25 2.25 l 3.25 1 l 1.4 1<br /> l 1.4 1.25 l 3 1.25 l 3 2 l 2.4 2 l gsave 0 .25 1 setrgbcolor<br /> fill grestore stroke 2 0.6 X moveto 2 .25 l 1.25 .25 l 1.25 1.6 l<br /> 1 1.6 l 1 0 l 2.25 0 l 2.25 0.6 l gsave 0 .25 1 setrgbcolor fill<br /> grestore stroke 2 1.6 X moveto 2 1.4 l stroke 2.25 .7 X moveto<br /> 2.25 .5 l stroke 2.3 2 X moveto 2.5 2 l stroke 22.5 setlinewidth<br /> 0 .25 1 setrgbcolor 1.125 1.45 X moveto 1.125 1.75 l stroke .6<br /> 1.125 X moveto .4 1.125 l stroke 1.5 1.125 X moveto 1.334 1.125 l<br /> stroke 4.5 setlinewidth 1.4 1.19286 X moveto 1.34 1.19286 l<br /> stroke showpage<br /> %EOF&lt;/pre&gt;</div>

AnonMoos