https://en.xen.wiki/index.php?action=history&feed=atom&title=990%2F989 2026-06-28T23:50:34Z Revision history for this page on the wiki MediaWiki 1.43.6 https://en.xen.wiki/index.php?title=990/989&diff=175076&oldid=prev 2025-01-07T14:24:03Z

<p>FloraC moved page <a href="/w/Yerkesisma" class="mw-redirect" title="Yerkesisma">Yerkesisma</a> to <a href="/w/990/989" title="990/989">990/989</a> over redirect: 6-digit ratios are okay as page titles</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <tr class="diff-title" lang="en"> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:24, 7 January 2025</td> </tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

FloraC https://en.xen.wiki/index.php?title=990/989&diff=175037&oldid=prev 2025-01-07T13:50:06Z

<p>Created page with &quot;{{Infobox Interval | Ratio = 990/989 | Name = yerkesisma | Color name = 43u23u1oy-2 &lt;br&gt; fothutwethuloyo negative 2nd | Comma = yes }} &#039;&#039;&#039;990/989 &#039;&#039;&#039;, the &#039;&#039;&#039;yerkesisma &#039;&#039;&#039; i...&quot;</p> <p><b>New page</b></p><div>{{Infobox Interval<br /> | Ratio = 990/989<br /> | Name = yerkesisma<br /> | Color name = 43u23u1oy-2 &lt;br&gt; fothutwethuloyo negative 2nd<br /> | Comma = yes<br /> }}<br /> <br /> &#039;&#039;&#039;990/989 &#039;&#039;&#039;, the &#039;&#039;&#039;yerkesisma &#039;&#039;&#039; is a [[43-limit]] [[superparticular interval|superparticular comma]] of about 1.7 [[cent]]s.<br /> <br /> == Commatic relationships ==<br /> This comma is the difference between the following superparticular pairs:<br /> * [[216/215]] and [[276/275]]<br /> * [[231/230]] and [[301/300]]<br /> * [[300/299]] and [[430/429]]<br /> * [[345/344]] and [[529/528]]<br /> <br /> It can be factored into the following superparticular ratios:<br /> * [[1001/1000]] and [[90000/89999]]<br /> * [[1045/1044]] and [[18792/18791]]<br /> * [[1089/1088]] and [[10880/10879]]<br /> * [[1105/1104]] and [[9504/9503]]<br /> * [[1197/1196]] and [[5720/5719]]<br /> * [[1377/1376]] and [[3520/3519]]<br /> * [[1463/1462]] and [[3060/3059]]<br /> * [[1496/1495]] and [[2925/2924]]<br /> * [[1764/1763]] and [[2255/2254]]<br /> * [[1936/1935]] and [[2025/2024]]<br /> <br /> == Temperaments ==<br /> Tempering out this comma in the full 43-limit leads to the rank-13 temperament &#039;&#039;&#039;yerkesismic&#039;&#039;&#039;. Using the 2.3.5.11.23.43 subgroup leads to the rank-5 temperament &#039;&#039;&#039;yerkesic&#039;&#039;&#039;.<br /> <br /> === Yerkesic ===<br /> <br /> [[Subgroup]]: 2.3.5.11.23.43<br /> <br /> [[Comma list]]: 990/989<br /> <br /> [[Mapping]]: &lt;br&gt;<br /> {| class=&quot;right-all&quot;<br /> |-<br /> | [⟨ || 1 || 1 || 2 || 3 || 4 || 4 || ],<br /> |-<br /> | ⟨ || 0 || 1 || 0 || 0 || 0 || 2 || ],<br /> |-<br /> | ⟨ || 0 || 0 || 1 || 0 || 0 || 1 || ],<br /> |-<br /> | ⟨ || 0 || 0 || 0 || 1 || 0 || 1 || ],<br /> |-<br /> | ⟨ || 0 || 0 || 0 || 0 || 1 || -1 || ]]<br /> |}<br /> <br /> [[Optimal tuning]] ([[CTE]]): ~2 = 1\1, ~3/2 = 701.841, ~5/4 = 386.192, ~11/8 = 551.047, ~23/16 = 628.737<br /> <br /> {{Optimal ET sequence|legend=1| 5, 5en, 7i, 12e, 14cn, 15n, 19, 27ei, 29, 31, 46, 58i, 60en, 65, 118, 152, 183, 277, 342, 494, 677i, 836n, 1019n }}<br /> <br /> == Etymology ==<br /> This comma was named by [[Francium]] in 2025. It refers to {{W|990 Yerkes}}, the asteroid, which in turn was named after the {{W|Yerkes Observatory}}, where this asteroid was discovered.<br /> <br /> == See also ==<br /> * [[Unnoticeable comma]]<br /> * [[List of superparticular intervals]]<br /> <br /> [[Category:Commas named after asteroids]]</div>

Francium