Lhearne

Prima - an interval size measure for [[11-limit]] [[comma]] arithmetic: one step of [[12276edo]]; 1 prima represents a [[parimo]]; 20 prima to a [[schisma]], 220 prima to [[81/80]], and 240 prima to the [[Pythagorean comma]]; exactly 1023 prima to 1\[[12edo]], 558 prima to 1\[[22edo]], 396 prima to 1\[[31edo]], 170.5 prima to a [[morion]], and 10.23 prima to a [[cent]].

[[SN scale|Step-nested (SN) scales]] - generalization of [[MOS scales]] to n-dimensional [[regular temperaments]] (as ''n''-SN scales), where [[MOS scales]] are 2-SN scales. SN scales are symmetric, and can be uniquely definied by a step signature, i.e., 2L 1M 4s, and a mapping.