Kite's thoughts on pergens: Difference between revisions
Wikispaces>TallKite **Imported revision 625629867 - Original comment: ** |
Wikispaces>TallKite **Imported revision 625630605 - Original comment: ** |
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<h2>IMPORTED REVISION FROM WIKISPACES</h2> | <h2>IMPORTED REVISION FROM WIKISPACES</h2> | ||
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | ||
: This revision was by author [[User:TallKite|TallKite]] and made on <tt>2018-01-30 | : This revision was by author [[User:TallKite|TallKite]] and made on <tt>2018-01-30 21:11:53 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>625630605</tt>.<br> | ||
: The revision comment was: <tt></tt><br> | : The revision comment was: <tt></tt><br> | ||
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | ||
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==Supplemental materials== | ==Supplemental materials== | ||
This PDF is a rank-2 notation guide that shows the full lattice for the first 15 pergens, up through the third-splits block. | This PDF is a rank-2 notation guide that shows the full lattice for the first 15 pergens, up through the third-splits block. It includes alternate enharmonics for many pergens. | ||
http://www.tallkite.com/misc_files/pergens.pdf | http://www.tallkite.com/misc_files/pergens.pdf | ||
Alt-pergenLister lists out thousands of pergens, and suggests periods, generators and enharmonics for each one. It can also list only those pergens supported by a specific edo. Written in Jesusonic, runs inside Reaper. | Alt-pergenLister lists out thousands of pergens, and suggests periods, generators and enharmonics for each one. Alternate enharmonics are not listed, but single-pair notation for false-double pergens is. It can also list only those pergens supported by a specific edo. Written in Jesusonic, runs inside Reaper. | ||
http://www.tallkite.com/misc_files/alt-pergenLister.zip | http://www.tallkite.com/misc_files/alt-pergenLister.zip | ||
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Simplify by dividing by b to get (P8/m, (q - ap, -m) / qm) = (P8/m, (a',b')/n') | Simplify by dividing by b to get (P8/m, (q - ap, -m) / qm) = (P8/m, (a',b')/n') | ||
[//unfinished proof//] | [//unfinished proof//] | ||
Although not rigorously proven, these last two tests have been empirically verified by alt-pergenlister. | |||
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<!-- ws:start:WikiTextHeadingRule:84:&lt;h2&gt; --><h2 id="toc16"><a name="Further Discussion-Supplemental materials"></a><!-- ws:end:WikiTextHeadingRule:84 -->Supplemental materials</h2> | <!-- ws:start:WikiTextHeadingRule:84:&lt;h2&gt; --><h2 id="toc16"><a name="Further Discussion-Supplemental materials"></a><!-- ws:end:WikiTextHeadingRule:84 -->Supplemental materials</h2> | ||
<br /> | <br /> | ||
This PDF is a rank-2 notation guide that shows the full lattice for the first 15 pergens, up through the third-splits block.<br /> | This PDF is a rank-2 notation guide that shows the full lattice for the first 15 pergens, up through the third-splits block. It includes alternate enharmonics for many pergens.<br /> | ||
<!-- ws:start:WikiTextUrlRule: | <!-- ws:start:WikiTextUrlRule:4941:http://www.tallkite.com/misc_files/pergens.pdf --><a class="wiki_link_ext" href="http://www.tallkite.com/misc_files/pergens.pdf" rel="nofollow">http://www.tallkite.com/misc_files/pergens.pdf</a><!-- ws:end:WikiTextUrlRule:4941 --><br /> | ||
<br /> | <br /> | ||
Alt-pergenLister lists out thousands of pergens, and suggests periods, generators and enharmonics for each one. It can also list only those pergens supported by a specific edo. Written in Jesusonic, runs inside Reaper.<br /> | Alt-pergenLister lists out thousands of pergens, and suggests periods, generators and enharmonics for each one. Alternate enharmonics are not listed, but single-pair notation for false-double pergens is. It can also list only those pergens supported by a specific edo. Written in Jesusonic, runs inside Reaper.<br /> | ||
<!-- ws:start:WikiTextUrlRule: | <!-- ws:start:WikiTextUrlRule:4942:http://www.tallkite.com/misc_files/alt-pergenLister.zip --><a class="wiki_link_ext" href="http://www.tallkite.com/misc_files/alt-pergenLister.zip" rel="nofollow">http://www.tallkite.com/misc_files/alt-pergenLister.zip</a><!-- ws:end:WikiTextUrlRule:4942 --><br /> | ||
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Screenshot of the first 38 pergens:<br /> | Screenshot of the first 38 pergens:<br /> | ||
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Simplify by dividing by b to get (P8/m, (q - ap, -m) / qm) = (P8/m, (a',b')/n')<br /> | Simplify by dividing by b to get (P8/m, (q - ap, -m) / qm) = (P8/m, (a',b')/n')<br /> | ||
[<em>unfinished proof</em>]<br /> | [<em>unfinished proof</em>]<br /> | ||
<br /> | |||
Although not rigorously proven, these last two tests have been empirically verified by alt-pergenlister.<br /> | |||
<br /> | <br /> | ||
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