View source for Kite's thoughts on the arrows of ups and down notation

In N-[[EDO|edo]], "arrow" means 1\N, and is thus a synonym for edostep (but see the exceptions and extensions below). Thus in [[22edo]], 5/4 is one arrow lower than 9/7, and two arrows lower than 4/3.

"Arrow" refers to the up-arrows and down-arrows (^ and v) used in [[ups and downs notation]] to raise or lower by one edostep. Sometimes the name of a notation symbol comes to mean that which the symbol indicates. Just as "bar" (the vertical line that separates measures) has come to mean "measure", "arrow" has gained a new meaning.

When applied to [[Sharpness|sharp-1]] edos like [[19edo]], "arrow" is somewhat counter-intuitive, because 19edo doesn't use ups and downs. Nevertheless, by analogy with other edos, in a 19edo context "arrow" means 1\19.

A double-pair [[pergen]] notation uses lifts and drops, which are collectively called '''slashes'''. Arrows and slashes are collectively called '''inflections'''. Sharps and flats are still called accidentals, and accidentals and inflections are collectively called '''alterations'''.

{| class="wikitable" style="text-align: center;"
|+ style="font-size: 105%;" | Alterations
|-
! colspan="2" rowspan="2" | Accidentals
! colspan="4" | Inflections
|-
! colspan="2" | Arrows
! colspan="2" | Slash
|-
| Sharp
| Flat
| Up
| Down
| Lift
| Drop
|-
| &#x266F;
| &#x266D;
| ^
| v
| /
| \
|}

These usages of the terms arrow, slash, inflection and alteration were coined by [[Kite Giedraitis]].

[[Category:Todo:cleanup]]
[[Category:Equal divisions of the octave]]
[[Category:Notation]]