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[[Chain-of-fifths_notation#Accidentals|Stein-Zimmermann notation]] can be viewed as a very simple apotome-fraction notation, only capable of notating half-apotomes.
[[Chain-of-fifths_notation#Accidentals|Stein-Zimmermann notation]] can be viewed as a very simple apotome-fraction notation, only capable of notating half-apotomes.


On 24-Sep-2016 in the Facebook Group: Microtonal Music and Tuning Theory, [[User:Cryptic Ruse|Cryptic Ruse]] introduced [[https://www.facebook.com/groups/497105067092502/permalink/840445019425170/|a combination of apotome-fraction and limma-fraction notations]] to cover all EDOs up to 72.  
On 24-Sep-2016 in the Facebook Group: Microtonal Music and Tuning Theory, [[Cryptic Ruse]] introduced [[https://www.facebook.com/groups/497105067092502/permalink/840445019425170/|a combination of apotome-fraction and limma-fraction notations]] to cover all EDOs up to 72.  


When the EDO has fifths so wide that the limma becomes very small or negative (e.g. 32-EDO), an apotome-fraction notation must be used. When the EDO has fifths so narrow that the apotome becomes very small or negative (e.g. 33-EDO), limma-fraction notations must be used.  
When the EDO has fifths so wide that the limma becomes very small or negative (e.g. 32-EDO), an apotome-fraction notation must be used. When the EDO has fifths so narrow that the apotome becomes very small or negative (e.g. 33-EDO), limma-fraction notations must be used.  


Although CRyptic later abandoned these notations, the principel was adopted by George Secor and Dave Keenan for the notation of EDOs with bad fifths, where a bad fidth is defined as one with an error of more tha 10 cents.
Although Cryptic Ruse later abandoned these notations, the principle was adopted by George Secor and Dave Keenan for the notation of EDOs with bad fifths, where a bad fifth is defined as one with an error of more than 10 cents (check this).


== Apotome-fraction notations ==
== Apotome-fraction notations ==