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Interval information
Ratio 1701/1700
Monzo [-2 5 -2 1 0 0 -1
Size in cents 1.01807
Name(s) palingenesis comma,
palingenetic comma,
open this interval in xen-calc

1701/1700, the palingenesis comma, also known as the palingenetic comma, or palingenesma, is a 17-limit unnoticeable comma with a size of roughly 1.02 cents. It identifies the septendecimal submajor third (21/17) by a stack of two 10/9 intervals, therefore making it comparable with the marveltwin (325/324). It is, in fact, the difference between the tannisma and the marveltwin. It also arises as the amount by which a stack consisting of 27/16 and 28/25 exceeds 17/9, and the the amount by which 85/84 falls short of 81/80. When tempered out in a linearly independent fashion, the resulting temperaments are called "palingenetic temperaments", and are characterized by the presence of essentially tempered chords called "palingenetic chords" in the 27-odd-limit.

This comma's names ultimately come from the Ancient Greek word "palingenesía" (meaning "rebirth", "regeneration" or "renaissance"[1]), a fitting name since people often hope for a new start after each year. The name is also appropriate in light of how certain essentially tempered chords generated by this comma are evocative of the kinds of chords heard in 12edo, which, oddly enough, actually tempers out this comma.

In Sagittal notation, it is the default comma represented by seven tinas.

See also