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<tr valign=top><td colspan=2><nowiki>Loading KnotTheory` (version of August 29, 2005, 15:33:11)...</nowiki></td></tr> |
<tr valign=top><td colspan=2><nowiki>Loading KnotTheory` (version of August 29, 2005, 15:33:11)...</nowiki></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[2]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>PD[Knot[5, 1]]</nowiki></code></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[2]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>PD[X[1, 6, 2, 7], X[3, 8, 4, 9], X[5, 10, 6, 1], X[7, 2, 8, 3], |
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X[9, 4, 10, 5]]</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[3]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>GaussCode[Knot[5, 1]]</nowiki></code></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[3]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>GaussCode[-1, 4, -2, 5, -3, 1, -4, 2, -5, 3]</nowiki></code></td></tr> |
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</table> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[4]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>DTCode[Knot[5, 1]]</nowiki></code></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[4]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>DTCode[6, 8, 10, 2, 4]</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[5]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>br = BR[Knot[5, 1]]</nowiki></code></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[5]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>BR[2, {-1, -1, -1, -1, -1}]</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[6]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{First[br], Crossings[br]}</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[6]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{2, 5}</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[7]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>BraidIndex[Knot[5, 1]]</nowiki></code></td></tr> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[7]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>2</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[8]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Show[DrawMorseLink[Knot[5, 1]]]</nowiki></code></td></tr> |
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<tr align=left><td></td><td>[[Image:5_1_ML.gif]]</td></tr><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[8]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>-Graphics-</nowiki></code></td></tr> |
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</table> |
</table> |
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<table><tr align=left> |
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{{InOut | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[9]:=</code></td> |
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n = 2 | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> (#[Knot[5, 1]]&) /@ { |
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in = <nowiki>PD[Knot[5, 1]]</nowiki> | |
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out = <nowiki>PD[X[1, 6, 2, 7], X[3, 8, 4, 9], X[5, 10, 6, 1], X[7, 2, 8, 3], X[9, 4, 10, 5]]</nowiki> }} |
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{{InOut | |
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n = 3 | |
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in = <nowiki>GaussCode[Knot[5, 1]]</nowiki> | |
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out = <nowiki>GaussCode[-1, 4, -2, 5, -3, 1, -4, 2, -5, 3]</nowiki> }} |
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{{InOut | |
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n = 4 | |
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in = <nowiki>DTCode[Knot[5, 1]]</nowiki> | |
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out = <nowiki>DTCode[6, 8, 10, 2, 4]</nowiki> }} |
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{{InOut | |
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n = 5 | |
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in = <nowiki>br = BR[Knot[5, 1]]</nowiki> | |
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out = <nowiki>BR[2, {-1, -1, -1, -1, -1}]</nowiki> }} |
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{{InOut | |
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n = 6 | |
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in = <nowiki>{First[br], Crossings[br]}</nowiki> | |
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out = <nowiki>{2, 5}</nowiki> }} |
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{{InOut | |
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n = 7 | |
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in = <nowiki>BraidIndex[Knot[5, 1]]</nowiki> | |
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out = <nowiki>2</nowiki> }} |
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{{Graphics| |
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n = 8 | |
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in = <nowiki>Show[DrawMorseLink[Knot[5, 1]]]</nowiki> | |
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img = 5_1_ML.gif | |
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out = <nowiki>-Graphics-</nowiki> }} |
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{{InOut | |
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n = 9 | |
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in = <nowiki> (#[Knot[5, 1]]&) /@ { |
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SymmetryType, UnknottingNumber, ThreeGenus, |
SymmetryType, UnknottingNumber, ThreeGenus, |
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BridgeIndex, SuperBridgeIndex, NakanishiIndex |
BridgeIndex, SuperBridgeIndex, NakanishiIndex |
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}</nowiki> |
}</nowiki></code></td></tr> |
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<tr align=left> |
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out = <nowiki>{Reversible, 2, 2, 2, 3, 1}</nowiki> }} |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[9]:=</code></td> |
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{{InOut | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{Reversible, 2, 2, 2, 3, 1}</nowiki></code></td></tr> |
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n = 10 | |
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</table> |
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in = <nowiki>alex = Alexander[Knot[5, 1]][t]</nowiki> | |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[10]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>alex = Alexander[Knot[5, 1]][t]</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[10]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> -2 1 2 |
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1 + t - - - t + t |
1 + t - - - t + t |
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t</nowiki> |
t</nowiki></code></td></tr> |
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</table> |
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{{InOut | |
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<table><tr align=left> |
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n = 11 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[11]:=</code></td> |
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in = <nowiki>Conway[Knot[5, 1]][z]</nowiki> | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Conway[Knot[5, 1]][z]</nowiki></code></td></tr> |
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out = <nowiki> 2 4 |
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<tr align=left> |
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1 + 3 z + z</nowiki> }} |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[11]:=</code></td> |
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{{InOut | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> 2 4 |
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n = 12 | |
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1 + 3 z + z</nowiki></code></td></tr> |
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in = <nowiki>Select[AllKnots[], (alex === Alexander[#][t])&]</nowiki> | |
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</table> |
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out = <nowiki>{Knot[5, 1], Knot[10, 132]}</nowiki> }} |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[12]:=</code></td> |
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n = 13 | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Select[AllKnots[], (alex === Alexander[#][t])&]</nowiki></code></td></tr> |
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in = <nowiki>{KnotDet[Knot[5, 1]], KnotSignature[Knot[5, 1]]}</nowiki> | |
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<tr align=left> |
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out = <nowiki>{5, -4}</nowiki> }} |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[12]:=</code></td> |
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{{InOut | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{Knot[5, 1], Knot[10, 132]}</nowiki></code></td></tr> |
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n = 14 | |
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</table> |
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in = <nowiki>Jones[Knot[5, 1]][q]</nowiki> | |
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<table><tr align=left> |
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out = <nowiki> -7 -6 -5 -4 -2 |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[13]:=</code></td> |
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-q + q - q + q + q</nowiki> }} |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{KnotDet[Knot[5, 1]], KnotSignature[Knot[5, 1]]}</nowiki></code></td></tr> |
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{{InOut | |
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<tr align=left> |
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n = 15 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[13]:=</code></td> |
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in = <nowiki>Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]</nowiki> | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{5, -4}</nowiki></code></td></tr> |
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out = <nowiki>{Knot[5, 1], Knot[10, 132]}</nowiki> }} |
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</table> |
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{{InOut | |
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<table><tr align=left> |
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n = 16 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[14]:=</code></td> |
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in = <nowiki>A2Invariant[Knot[5, 1]][q]</nowiki> | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Jones[Knot[5, 1]][q]</nowiki></code></td></tr> |
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out = <nowiki> -22 -20 -18 -14 -12 2 -8 -6 |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[14]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> -7 -6 -5 -4 -2 |
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-q + q - q + q + q</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[15]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[15]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{Knot[5, 1], Knot[10, 132]}</nowiki></code></td></tr> |
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</table> |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[16]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>A2Invariant[Knot[5, 1]][q]</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[16]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> -22 -20 -18 -14 -12 2 -8 -6 |
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-q - q - q + q + q + --- + q + q |
-q - q - q + q + q + --- + q + q |
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10 |
10 |
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q</nowiki> |
q</nowiki></code></td></tr> |
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</table> |
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{{InOut | |
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<table><tr align=left> |
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n = 17 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[17]:=</code></td> |
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in = <nowiki>HOMFLYPT[Knot[5, 1]][a, z]</nowiki> | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>HOMFLYPT[Knot[5, 1]][a, z]</nowiki></code></td></tr> |
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out = <nowiki> 4 6 4 2 6 2 4 4 |
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<tr align=left> |
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3 a - 2 a + 4 a z - a z + a z</nowiki> }} |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[17]:=</code></td> |
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{{InOut | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> 4 6 4 2 6 2 4 4 |
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n = 18 | |
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3 a - 2 a + 4 a z - a z + a z</nowiki></code></td></tr> |
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in = <nowiki>Kauffman[Knot[5, 1]][a, z]</nowiki> | |
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</table> |
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out = <nowiki> 4 6 5 7 9 4 2 6 2 8 2 |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[18]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Kauffman[Knot[5, 1]][a, z]</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[18]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> 4 6 5 7 9 4 2 6 2 8 2 |
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3 a + 2 a - 2 a z - a z + a z - 4 a z - 3 a z + a z + |
3 a + 2 a - 2 a z - a z + a z - 4 a z - 3 a z + a z + |
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5 3 7 3 4 4 6 4 |
5 3 7 3 4 4 6 4 |
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a z + a z + a z + a z</nowiki> |
a z + a z + a z + a z</nowiki></code></td></tr> |
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</table> |
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{{InOut | |
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<table><tr align=left> |
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n = 19 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[19]:=</code></td> |
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in = <nowiki>{Vassiliev[2][Knot[5, 1]], Vassiliev[3][Knot[5, 1]]}</nowiki> | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{Vassiliev[2][Knot[5, 1]], Vassiliev[3][Knot[5, 1]]}</nowiki></code></td></tr> |
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out = <nowiki>{3, -5}</nowiki> }} |
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<tr align=left> |
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{{InOut | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[19]:=</code></td> |
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n = 20 | |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>{3, -5}</nowiki></code></td></tr> |
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in = <nowiki>Kh[Knot[5, 1]][q, t]</nowiki> | |
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</table> |
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out = <nowiki> -5 -3 1 1 1 1 |
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<table><tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[20]:=</code></td> |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>Kh[Knot[5, 1]][q, t]</nowiki></code></td></tr> |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[20]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> -5 -3 1 1 1 1 |
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q + q + ------ + ------ + ------ + ----- |
q + q + ------ + ------ + ------ + ----- |
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15 5 11 4 11 3 7 2 |
15 5 11 4 11 3 7 2 |
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q t q t q t q t</nowiki> |
q t q t q t q t</nowiki></code></td></tr> |
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</table> |
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{{InOut | |
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<table><tr align=left> |
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n = 21 | |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">In[21]:=</code></td> |
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in = <nowiki>ColouredJones[Knot[5, 1], 2][q]</nowiki> | |
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<td><code style="white-space: pre; color: red; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki>ColouredJones[Knot[5, 1], 2][q]</nowiki></code></td></tr> |
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out = <nowiki> -19 -18 -16 2 -13 -12 -10 -9 -7 -4 |
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<tr align=left> |
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<td width=70px><code style="color: blue; border: 0px; padding: 0em">Out[21]:=</code></td> |
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<td><code style="white-space: pre; color: black; border: 0px; padding: 0em; background-color: rgb(255,255,255);"><nowiki> -19 -18 -16 2 -13 -12 -10 -9 -7 -4 |
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q - q + q - --- + q - q + q - q + q + q |
q - q + q - --- + q - q + q - q + q + q |
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15 |
15 |
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q</nowiki> |
q</nowiki></code></td></tr> |
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</table> }} |
Revision as of 15:51, 1 September 2005
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(KnotPlot image) |
See the full Rolfsen Knot Table. Visit 5 1's page at the Knot Server (KnotPlot driven, includes 3D interactive images!) |
An interlaced pentagram, this is known variously as the "Cinquefoil Knot", after certain herbs and shrubs of the rose family which have 5-lobed leaves and 5-petaled flowers (see e.g. [4]), as the "Pentafoil Knot" (visit Bert Jagers' pentafoil page), as the "Double Overhand Knot", as 5_1, or finally as the torus knot T(5,2). When taken off the post the strangle knot (hitch) of practical knot tying deforms to 5_1 |
This sentence was last edited by Dror. Sometime later, Scott added this sentence.
Knot presentations
Planar diagram presentation | X1627 X3849 X5,10,6,1 X7283 X9,4,10,5 |
Gauss code | -1, 4, -2, 5, -3, 1, -4, 2, -5, 3 |
Dowker-Thistlethwaite code | 6 8 10 2 4 |
Conway Notation | [5] |
Minimum Braid Representative | A Morse Link Presentation | An Arc Presentation | ||
Length is 5, width is 2, Braid index is 2 |
[{7, 2}, {1, 3}, {2, 4}, {3, 5}, {4, 6}, {5, 7}, {6, 1}] |
[edit Notes on presentations of 5 1]
KnotTheory`
. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.
(The path below may be different on your system, and possibly also the KnotTheory` date)
In[1]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of May 31, 2006, 14:15:20.091.
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In[3]:=
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K = Knot["5 1"];
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In[4]:=
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PD[K]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
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X1627 X3849 X5,10,6,1 X7283 X9,4,10,5 |
In[5]:=
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GaussCode[K]
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Out[5]=
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-1, 4, -2, 5, -3, 1, -4, 2, -5, 3 |
In[6]:=
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DTCode[K]
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Out[6]=
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6 8 10 2 4 |
(The path below may be different on your system)
In[7]:=
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AppendTo[$Path, "C:/bin/LinKnot/"];
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In[8]:=
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ConwayNotation[K]
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Out[8]=
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[5] |
In[9]:=
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br = BR[K]
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KnotTheory::credits: The minimum braids representing the knots with up to 10 crossings were provided by Thomas Gittings. See arXiv:math.GT/0401051.
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Out[9]=
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In[10]:=
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{First[br], Crossings[br], BraidIndex[K]}
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KnotTheory::credits: The braid index data known to KnotTheory` is taken from Charles Livingston's http://www.indiana.edu/~knotinfo/.
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KnotTheory::loading: Loading precomputed data in IndianaData`.
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Out[10]=
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{ 2, 5, 2 } |
In[11]:=
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Show[BraidPlot[br]]
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Out[11]=
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-Graphics- |
In[12]:=
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Show[DrawMorseLink[K]]
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KnotTheory::credits: "MorseLink was added to KnotTheory` by Siddarth Sankaran at the University of Toronto in the summer of 2005."
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KnotTheory::credits: "DrawMorseLink was written by Siddarth Sankaran at the University of Toronto in the summer of 2005."
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Out[12]=
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-Graphics- |
In[13]:=
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ap = ArcPresentation[K]
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Out[13]=
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ArcPresentation[{7, 2}, {1, 3}, {2, 4}, {3, 5}, {4, 6}, {5, 7}, {6, 1}] |
In[14]:=
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Draw[ap]
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Out[14]=
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-Graphics- |
Three dimensional invariants
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Four dimensional invariants
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Polynomial invariants
A1 Invariants.
Weight | Invariant |
---|---|
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
8 |
A2 Invariants.
Weight | Invariant |
---|---|
1,0 | |
1,1 | |
2,0 | |
3,0 |
A3 Invariants.
Weight | Invariant |
---|---|
0,1,0 | |
1,0,0 | |
1,0,1 |
A4 Invariants.
Weight | Invariant |
---|---|
0,1,0,0 | |
1,0,0,0 |
B2 Invariants.
Weight | Invariant |
---|---|
0,1 | |
1,0 |
B3 Invariants.
Weight | Invariant |
---|---|
1,0,0 |
B4 Invariants.
Weight | Invariant |
---|---|
1,0,0,0 |
C3 Invariants.
Weight | Invariant |
---|---|
1,0,0 |
C4 Invariants.
Weight | Invariant |
---|---|
1,0,0,0 |
D4 Invariants.
Weight | Invariant |
---|---|
0,1,0,0 | |
1,0,0,0 |
G2 Invariants.
Weight | Invariant |
---|---|
0,1 | |
1,0 |
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KnotTheory`
, as shown in the (simulated) Mathematica session below. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting. This Mathematica session is also available (albeit only for the knot 5_2) as the notebook PolynomialInvariantsSession.nb.
(The path below may be different on your system, and possibly also the KnotTheory` date)
In[1]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of August 31, 2006, 11:25:27.5625.
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In[3]:=
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K = Knot["5 1"];
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In[4]:=
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Alexander[K][t]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
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In[5]:=
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Conway[K][z]
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Out[5]=
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In[6]:=
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Alexander[K, 2][t]
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KnotTheory::credits: The program Alexander[K, r] to compute Alexander ideals was written by Jana Archibald at the University of Toronto in the summer of 2005.
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Out[6]=
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In[7]:=
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{KnotDet[K], KnotSignature[K]}
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Out[7]=
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{ 5, -4 } |
In[8]:=
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Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
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In[9]:=
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HOMFLYPT[K][a, z]
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KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.
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Out[9]=
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In[10]:=
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Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
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"Similar" Knots (within the Atlas)
Same Alexander/Conway Polynomial: {10_132,}
Same Jones Polynomial (up to mirroring, ): {10_132,}
KnotTheory`
. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.
(The path below may be different on your system, and possibly also the KnotTheory` date)
In[1]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of May 31, 2006, 14:15:20.091.
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In[3]:=
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K = Knot["5 1"];
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In[4]:=
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{A = Alexander[K][t], J = Jones[K][q]}
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[4]=
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{ , } |
In[5]:=
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DeleteCases[Select[AllKnots[], (A === Alexander[#][t]) &], K]
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KnotTheory::loading: Loading precomputed data in DTCode4KnotsTo11`.
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KnotTheory::credits: The GaussCode to PD conversion was written by Siddarth Sankaran at the University of Toronto in the summer of 2005.
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Out[5]=
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{10_132,} |
In[6]:=
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DeleteCases[
Select[
AllKnots[],
(J === Jones[#][q] || (J /. q -> 1/q) === Jones[#][q]) &
],
K
]
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KnotTheory::loading: Loading precomputed data in Jones4Knots11`.
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Out[6]=
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{10_132,} |
Vassiliev invariants
V2 and V3: | (3, -5) |
V2,1 through V6,9: |
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V2,1 through V6,9 were provided by Petr Dunin-Barkowski <barkovs@itep.ru>, Andrey Smirnov <asmirnov@itep.ru>, and Alexei Sleptsov <sleptsov@itep.ru> and uploaded on October 2010 by User:Drorbn. Note that they are normalized differently than V2 and V3.
Khovanov Homology
The coefficients of the monomials are shown, along with their alternating sums (fixed , alternation over ). The squares with yellow highlighting are those on the "critical diagonals", where or , where -4 is the signature of 5 1. Nonzero entries off the critical diagonals (if any exist) are highlighted in red. |
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Integral Khovanov Homology
(db, data source) |
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The Coloured Jones Polynomials
2 | |
3 | |
4 | |
5 | |
6 | |
7 |
Computer Talk
Much of the above data can be recomputed by Mathematica using the package KnotTheory`
. See A Sample KnotTheory` Session, or any of the Computer Talk sections above.
Modifying This Page
Read me first: Modifying Knot Pages
See/edit the Rolfsen Knot Page master template (intermediate). See/edit the Rolfsen_Splice_Base (expert). Back to the top. |
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