Tridecapyth comma: Difference between revisions

Rework
- data (addressed in no-5 page)
 
(18 intermediate revisions by 8 users not shown)
Line 5: Line 5:
| Comma = yes
| Comma = yes
}}
}}
The '''tridecapyth comma''' ({{monzo|legend=1| 28 -20 0 0 0 1 }}, [[ratio]]: 3489660928/3486784401) is an [[unnoticeable comma|unnoticeable]] [[13-limit]] [[comma]] which measures roughly 1.43 [[cent]]s. It is the interval which separates [[13/8]] and a stack of twenty [[3/2|perfect fifths (3/2)]] octave reduced, and which separates [[16/13]] and a stack of four [[256/243|Pythagorean limmas (256/243)]]. In terms of commas, it is the difference between the [[1053/1024|tridecimal quartertone (1053/1024)]] and a stack of two [[Pythagorean comma]]s.
 
The '''tridecapyth comma''' ({{Monzo|legend=1| 28 -20 0 0 0 1 }}, [[ratio]]: 3489660928/3486784401), also described as the ''tridecaschisma'' (from "trideca-" (for 13) + "schisma"), is an [[unnoticeable comma]] in [[13-limit|13-limit just intonation]] which measures roughly 1.43 {{cent}}. It is the interval by which [[13/8]] exceeds a stack of twenty [[3/2|perfect fifths (3/2)]] octave reduced, and by which [[16/13]] falls short of a stack of four [[256/243|Pythagorean limmas (256/243)]]. It is perhaps more easily conceptualized as reaching [[13/4]] through ([[9/8]])<sup>10</sup>. In terms of commas, it is the amount by which [[1053/1024|tridecimal quartertone (1053/1024)]] is greater than a stack of two [[Pythagorean comma]]s.  
 
== Temperaments ==
[[Tempering out]] this comma in the 2.3.13 subgroup leads to the [[tridecapyth]] temperament.
 
== Etymology ==
This comma was named by [[Aura]] in 2021.
 
== See also ==
* [[Tridecimal schisma]] (disambiguation page)
 
[[Category:Commas named for the intervals they stack]]
[[Category:Commas named after polymaths]]