Neutral and interordinal intervals in MOS scales: Difference between revisions

@@ Line 13: / Line 13: @@
 === Statement ===
 Suppose a > b and gcd(a, b) = 1.
-# The impropriety number (b - 1) of a single-period mos aLbs counts the places in 2(2a+b)edo (twice the basic mos tuning for aLbs) where assigning interordinals to the parent mos of aLbs fails.
+# The impropriety number (b - 1) of the mos aLbs counts the places in 2(2a+b)edo (twice the basic mos tuning for aLbs) where assigning interordinals to the parent mos of aLbs fails.
 # Every interordinal in basic aLbs (an interval that is exactly halfway between the larger k-step and the smaller (k+1)-step) is a neutral or semiperfect interval in the parent mos bL(a-b)s, but a neutral interval in basic aLbs is not always an interordinal interval in the parent mos.
 === Proof ===