189/187: Difference between revisions

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'''189/187''', or the '''chouten comma''' is a [[17-limit]] or 3.7.11.17-subgroup [[comma]] of about 18.42 [[cent]]s.
'''189/187''', or the '''chouten comma''' is a [[17-limit]] or 3.7.11.17-subgroup [[comma]] of about 18.42 [[cent]]s.


This comma is the difference between [[21/11]] and [[17/9]], or [[11/9]] and [[21/17]], etc.
This comma is the difference between [[21/11]] and [[17/9]], or [[11/9]] and [[21/17]], [[18/17]] and [[22/21]] etc.
 
==Commatic relations==
==Commatic relations==
This comma is the sum of the following comma combinations:
This comma is the sum of the following comma combinations:
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===[[S-expression]]===
===[[S-expression]]===
189/187 is a 1⁄4-square particulars which is S18*S19*S20*S21.
189/187 is a 1/4-square particulars which is S18*S19*S20*S21.


==Temperament==
==Temperament==