2187/1250: Difference between revisions

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 | Name = tetraptolemaic diminished seventh, ragismic 5-limit harmonic seventh
 }}
-'''2187/1250''', the '''tetraptolemaic diminished seventh''', is a [[5-limit]] interval very closely approximating [[7/4]], being only a [[4375/4374|ragisma]] (4375/4374) below 7/4. In the [[ragismic]] temperament, it is equated with 7/4. It is very accurately approximated by the 46th step of [[57edo]] (46\57), which is only 0.009{{cent}} flat of this interval.
+'''2187/1250''', the '''tetraptolemaic diminished seventh''', is a [[5-limit]] interval very closely approximating [[7/4]]. It is a [[4375/4374|ragisma]] (4375/4374) below 7/4, and [[250/243]] below [[9/5]]. In the [[ragismic]] temperament, it is equated with 7/4. It is very accurately approximated by the 46th step of [[57edo]] (46\57), which is only 0.009{{cent}} flat of this interval.
 [[Category:Ragismic]]