217/216: Difference between revisions

From Xenharmonic Wiki
Jump to navigation Jump to search
Created page with "{{Infobox Interval | Name = tricesimoprimal kleisma | Comma = yes }} '''217/216''', the '''tricesimoprimal kleisma''', is a small 31-limit (also 2.3.7.31-..."
 
mNo edit summary
 
(One intermediate revision by the same user not shown)
Line 4: Line 4:
}}
}}


'''217/216''', the '''tricesimoprimal kleisma''', is a [[small comma|small]] [[31-limit]] (also 2.3.7.31-[[subgroup]]) [[comma]] measuring almost exactly 8 [[cent]]s. It is the difference between [[9/7]] and [[31/24]], two intervals that commonly represent ultramajor thirds.
'''217/216''', the '''tricesimoprimal kleisma''', is a [[small comma|small]] [[31-limit]] (also 2.3.7.31-[[subgroup]]) [[comma]] measuring almost exactly 8 [[cent]]s. It is the difference between [[9/7]] and [[31/24]], two intervals that commonly represent sharp supermajor/flat ultramajor thirds; as well as the difference of [[8/7]] from [[31/27]] (a good approximation of [[5edo|1\5]]), and the difference of [[28/27]] from [[32/31]].


== Etymology ==
== Etymology ==
This comma is known as the tricesimoprimal kleisma due to its proximity (differing only by [[15625/15624]]) to the classical kleisma, [[15625/15552]] and to other commas sometimes referred to as "kleismas", such as [[1029/1024]] (differing by [[3969/3968]]) and [[225/224]] (differing by [[6076/6075]]).
This comma is known as the tricesimoprimal kleisma due to its proximity (differing only by [[15625/15624]]) to the classical kleisma, [[15625/15552]] and to other commas sometimes referred to as "kleismas", such as [[1029/1024]] (differing by [[3969/3968]]) and [[225/224]] (differing by [[6076/6075]]).

Latest revision as of 12:40, 18 March 2025

Interval information
Ratio 217/216
Subgroup monzo 2.3.7.31 [-3 -3 1 1
Size in cents 7.996476¢
Name tricesimoprimal kleisma
FJS name [math]\displaystyle{ \text{P1}^{7,31} }[/math]
Special properties superparticular,
reduced
Tenney height (log2 nd) 15.5164
Weil height (log2 max(n, d)) 15.5231
Wilson height (sopfr(nd)) 53
Comma size small
Open this interval in xen-calc

217/216, the tricesimoprimal kleisma, is a small 31-limit (also 2.3.7.31-subgroup) comma measuring almost exactly 8 cents. It is the difference between 9/7 and 31/24, two intervals that commonly represent sharp supermajor/flat ultramajor thirds; as well as the difference of 8/7 from 31/27 (a good approximation of 1\5), and the difference of 28/27 from 32/31.

Etymology

This comma is known as the tricesimoprimal kleisma due to its proximity (differing only by 15625/15624) to the classical kleisma, 15625/15552 and to other commas sometimes referred to as "kleismas", such as 1029/1024 (differing by 3969/3968) and 225/224 (differing by 6076/6075).