<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>https://drorbn.net/index.php?action=history&amp;feed=atom&amp;title=Notes_for_AKT-170113%2F0%3A50%3A48</id>
	<title>Notes for AKT-170113/0:50:48 - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://drorbn.net/index.php?action=history&amp;feed=atom&amp;title=Notes_for_AKT-170113%2F0%3A50%3A48"/>
	<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;action=history"/>
	<updated>2026-05-08T01:45:52Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.39.6</generator>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15913&amp;oldid=prev</id>
		<title>Rolandvdv at 13:33, 14 January 2017</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15913&amp;oldid=prev"/>
		<updated>2017-01-14T13:33:52Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:33, 14 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;R&lt;/del&gt; = 1 + &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;hr&lt;/del&gt; + \frac{1}{2!}h^&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2r&lt;/del&gt;^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;R_{ij}&lt;/ins&gt; = 1 + &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;hr_{ij}&lt;/ins&gt; + \frac{1}{2!}h^&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2r_{ij}&lt;/ins&gt;^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;Notice I added the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just for fun. &lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;Notice I added the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just for fun. &lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I wanted to test this idea in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I wanted to test this idea in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;!-- diff cache key drordb-drorbn_:diff:wikidiff2:1.12:old-15912:rev-15913:1.13.0 --&gt;
&lt;/table&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15912&amp;oldid=prev</id>
		<title>Rolandvdv at 13:18, 14 January 2017</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15912&amp;oldid=prev"/>
		<updated>2017-01-14T13:18:25Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:18, 14 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;put&lt;/del&gt; the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a hint of more to&lt;/del&gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;come&lt;/del&gt;. &lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Notice &lt;/ins&gt;I &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;added&lt;/ins&gt; the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;for&lt;/ins&gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;fun&lt;/ins&gt;. &lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;thought it was fun&lt;/del&gt; to &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;have&lt;/del&gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;an&lt;/del&gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;example of this&lt;/del&gt; in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;wanted&lt;/ins&gt; to &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;test&lt;/ins&gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;this&lt;/ins&gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;idea&lt;/ins&gt; in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;If I got it right the positive Reidemeister 1 curl yields the value &amp;lt;math&amp;gt;1+ h(EF+\frac{1}{4}H^2)+\frac{1}{2}h^2(2E^2F^2 + EH^2F+EFH+\frac{H^4}{8})&amp;lt;/math&amp;gt; bad news, we need the element &amp;lt;math&amp;gt;S&amp;lt;/math&amp;gt; to get an invariant in this case.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;If I got it right the positive Reidemeister 1 curl yields the value &amp;lt;math&amp;gt;1+ h(EF+\frac{1}{4}H^2)+\frac{1}{2}h^2(2E^2F^2 + EH^2F+EFH+\frac{H^4}{8})&amp;lt;/math&amp;gt; bad news, we need the element &amp;lt;math&amp;gt;S&amp;lt;/math&amp;gt; to get an invariant in this case.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty diff-side-deleted&quot;&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;Taking &amp;lt;math&amp;gt;\tilde{r}_{ij} = r_{ij}+r_{ji}&amp;lt;/math&amp;gt; we may do a little better in that now the curl yields &amp;lt;math&amp;gt;1+ h(EF+FE+\frac{1}{2}H^2)+\mathcal{O}(h^2)&amp;lt;/math&amp;gt;&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty diff-side-deleted&quot;&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;indicating our ambiguity may now be a central element (the Casimir at order h).&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;!-- diff cache key drordb-drorbn_:diff:wikidiff2:1.12:old-15911:rev-15912:1.13.0 --&gt;
&lt;/table&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15911&amp;oldid=prev</id>
		<title>Rolandvdv at 13:09, 14 January 2017</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15911&amp;oldid=prev"/>
		<updated>2017-01-14T13:09:07Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:09, 14 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;If I got it right the positive Reidemeister 1 curl yields the value &amp;lt;math&amp;gt;1+ h(EF+\frac{1}{4}H^2)+\frac{1}{2}h^2(2E^2F^2 + EH^2F+EFH+\frac{H^4}{8})&amp;lt;/math&amp;gt; bad news, we need the element &amp;lt;math&amp;gt;S&amp;lt;/math&amp;gt; to &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;fix&lt;/del&gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;it&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;If I got it right the positive Reidemeister 1 curl yields the value &amp;lt;math&amp;gt;1+ h(EF+\frac{1}{4}H^2)+\frac{1}{2}h^2(2E^2F^2 + EH^2F+EFH+\frac{H^4}{8})&amp;lt;/math&amp;gt; bad news, we need the element &amp;lt;math&amp;gt;S&amp;lt;/math&amp;gt; to &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;get&lt;/ins&gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;an invariant in this case&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;!-- diff cache key drordb-drorbn_:diff:wikidiff2:1.12:old-15910:rev-15911:1.13.0 --&gt;
&lt;/table&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15910&amp;oldid=prev</id>
		<title>Rolandvdv at 13:07, 14 January 2017</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15910&amp;oldid=prev"/>
		<updated>2017-01-14T13:07:37Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:07, 14 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{ij} = E_iF_j + \frac{1}{4} H_iH_j&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-empty diff-side-deleted&quot;&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;If I got it right the positive Reidemeister 1 curl yields the value &amp;lt;math&amp;gt;1+ h(EF+\frac{1}{4}H^2)+\frac{1}{2}h^2(2E^2F^2 + EH^2F+EFH+\frac{H^4}{8})&amp;lt;/math&amp;gt; bad news, we need the element &amp;lt;math&amp;gt;S&amp;lt;/math&amp;gt; to fix it.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;!-- diff cache key drordb-drorbn_:diff:wikidiff2:1.12:old-15909:rev-15910:1.13.0 --&gt;
&lt;/table&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15909&amp;oldid=prev</id>
		<title>Rolandvdv at 12:22, 14 January 2017</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15909&amp;oldid=prev"/>
		<updated>2017-01-14T12:22:01Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 08:22, 14 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;12&lt;/del&gt;} = &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;E_1F_2&lt;/del&gt; + \frac{1}{4} &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;H_1H_2&lt;/del&gt;&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
  &lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;
  &lt;td style=&quot;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;&quot;&gt;&lt;div&gt;I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ij&lt;/ins&gt;} = &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;E_iF_j&lt;/ins&gt; + \frac{1}{4} &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;H_iH_j&lt;/ins&gt;&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;!-- diff cache key drordb-drorbn_:diff:wikidiff2:1.12:old-15908:rev-15909:1.13.0 --&gt;
&lt;/table&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15908&amp;oldid=prev</id>
		<title>Rolandvdv: Created page with &quot;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &lt;math&gt;R = 1 + hr + \frac{1}{2!}h^2r^2&lt;/math&gt; and working modulo &lt;math &gt;h^3 &lt;/mat...&quot;</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=Notes_for_AKT-170113/0:50:48&amp;diff=15908&amp;oldid=prev"/>
		<updated>2017-01-14T12:21:28Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/mat...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Roland}} At 38:12 Dror mentions a solution to CYBE already gives a knot invariant by setting &amp;lt;math&amp;gt;R = 1 + hr + \frac{1}{2!}h^2r^2&amp;lt;/math&amp;gt; and working modulo &amp;lt;math &amp;gt;h^3 &amp;lt;/math&amp;gt;.&lt;br /&gt;
I put the &amp;lt;math&amp;gt;h^2&amp;lt;/math&amp;gt; term to make the inverse &amp;lt;math&amp;gt;R^{-1}&amp;lt;/math&amp;gt; be identical but with negative &amp;lt;math&amp;gt;h&amp;lt;/math&amp;gt;, the factorial is just a hint of more to come. &lt;br /&gt;
I thought it was fun to have an example of this in &amp;lt;math&amp;gt;U(sl_2)&amp;lt;/math&amp;gt; where you can check that &amp;lt;math&amp;gt;r_{12} = E_1F_2 + \frac{1}{4} H_1H_2&amp;lt;/math&amp;gt; is a solution to CYBE.&lt;/div&gt;</summary>
		<author><name>Rolandvdv</name></author>
	</entry>
</feed>