2835/2816: Difference between revisions

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Etymology: Added "fwiwisma" as an alternate name for this comma
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Eufalesio (talk | contribs)
half pythagorean comma
 
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{{Infobox Interval
{{Infobox Interval
| Ratio = 2835/2816
| Ratio = 2835/2816
| Name = fwiwisma, 35/11 kleisma
| Name = fwiwisma, 35/11 kleisma, kalismic half pythcomma
| Color name = L1uzy1, Laluzoyo comma
| Color name = L1uzy1, Laluzoyo comma
| Comma = yes
| Comma = yes
}}
}}
'''2835/2816''', the '''fwiwisma''', is a [[comma]] with a value of approximately 11.6 [[cent]]s. It represents the difference between:


The [[Sagittal]] '''35/11 kleisma''' or '''fwiwisma''' is a [[comma]] with a [[ratio]] of '''2835/2816''' and a value of approximately 11.64 [[cent]]s. In the Sagittal system, this comma (possibly tempered) is represented (in a secondary role) by the sagittal {{sagittal | )|( }} and is called the '''35/11 kleisma''', or '''35/11k''' for short, because the simplest interval it notates is 35/11 = 5×7/11 (equiv. 35/22), as for example in A-F{{nbhsp}}{{sagittal | )|( }}. The primary role of {{ sagittal | )|( }} is [[896/891#Sagittal notation|896/891]] (11/7k up). The downward version is called '''11/35k''' or '''35/11k down''' and is represented (in a secondary role) by {{sagittal| )!( }}.
* [[45/44]] and [[64/63]]
* [[81/64]] and [[44/35]].
* [[729/512]] and [[99/70]]


==Etymology==
Due to this last difference, it notably serves as a half [[pythagorean comma]] for a strong rational representation of √2-[[hemipyth]].
 
== Temperaments ==
This comma is [[tempering out|tempered out]] in [[miracle]], as well as supporting edos {{EDOs| 31, 41, and 72 }}. It is also the sum of [[243/242]] and [[385/384]], and so is tempered out in the rank-3 temperament [[mirwomo]].
 
If instead tempered, in [[kalismic]], the pythagorean comma is halved, wherein each half represents 2835/2816~[[72171/71680]].
 
== Notation ==
In the [[Sagittal]] system, this comma (possibly tempered) is represented in a secondary role by the sagittal {{sagittal| )|( }} and is called the '''35/11 kleisma''', or '''35/11k''' for short, because the simplest interval it notates is 35/11 = 5×7/11 (equiv. 35/22), as for example in A–F{{nbhsp}}{{sagittal| )|( }}. The primary role of {{sagittal| )|( }} is [[896/891 #Sagittal notation|896/891]] (11/7k up). The downward version is called '''11/35k''' or '''35/11k down''' and is represented in a secondary role by {{sagittal| )!( }}.
 
== Etymology ==
The name of this comma was coined in 2024 by [[Douglas Blumeyer]] during a conversation about what it should be. It comes from the acronym ''FWIW'', meaning "for what it's worth."
The name of this comma was coined in 2024 by [[Douglas Blumeyer]] during a conversation about what it should be. It comes from the acronym ''FWIW'', meaning "for what it's worth."


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fwiw I'd rather you not. there's already a blumeyer, blume, and yer commas which are related which I named after myself, and I don't think this is related to them. why not name it the davesma or something, by your logic? or you could name it the fwiwisma lol
fwiw I'd rather you not. there's already a blumeyer, blume, and yer commas which are related which I named after myself, and I don't think this is related to them. why not name it the davesma or something, by your logic? or you could name it the fwiwisma lol
</blockquote>
</blockquote>
 
[[Category:Fwiwismic]]
[[Category:Commas named systematically]]
[[Category:Commas named following events]]

Latest revision as of 08:31, 9 April 2026

Interval information
Ratio 2835/2816
Factorization 2-8 × 34 × 5 × 7 × 11-1
Monzo [-8 4 1 1 -1
Size in cents 11.64168¢
Names fwiwisma,
35/11 kleisma,
kalismic half pythcomma
Color name L1uzy1, Laluzoyo comma
FJS name [math]\displaystyle{ \text{A1}^{5,7}_{11} }[/math]
Special properties reduced
Tenney norm (log2 nd) 22.9286
Weil norm (log2 max(n, d)) 22.9383
Wilson norm (sopfr(nd)) 51
Comma size small
Open this interval in xen-calc

2835/2816, the fwiwisma, is a comma with a value of approximately 11.6 cents. It represents the difference between:

Due to this last difference, it notably serves as a half pythagorean comma for a strong rational representation of √2-hemipyth.

Temperaments

This comma is tempered out in miracle, as well as supporting edos 31, 41, and 72. It is also the sum of 243/242 and 385/384, and so is tempered out in the rank-3 temperament mirwomo.

If instead tempered, in kalismic, the pythagorean comma is halved, wherein each half represents 2835/2816~72171/71680.

Notation

In the Sagittal system, this comma (possibly tempered) is represented in a secondary role by the sagittal and is called the 35/11 kleisma, or 35/11k for short, because the simplest interval it notates is 35/11 = 5×7/11 (equiv. 35/22), as for example in A–F⁠ ⁠. The primary role of is 896/891 (11/7k up). The downward version is called 11/35k or 35/11k down and is represented in a secondary role by .

Etymology

The name of this comma was coined in 2024 by Douglas Blumeyer during a conversation about what it should be. It comes from the acronym FWIW, meaning "for what it's worth."

fwiw I'd rather you not. there's already a blumeyer, blume, and yer commas which are related which I named after myself, and I don't think this is related to them. why not name it the davesma or something, by your logic? or you could name it the fwiwisma lol