Swetismic temperaments

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This is a collection of rank-3 temperaments tempering out the swetisma, 540/539 = [2 3 1 -2 -1. For the rank-4 swetismic temperament, see Catalog of rank-4 temperaments #Swetismic (540/539).

Temperaments discussed elsewhere are:

Considered below are hades, minos, persephone and hypnos.

Hades

7-limit (stearnsmic)

Subgroup: 2.3.5.7

Comma list: 118098/117649

Mapping[2 1 0 2], 0 3 0 5], 0 0 1 0]]

mapping generators: ~343/243, ~9/7, ~5

Optimal ET sequence22, 50, 58, 72, 130, 152, 202, 224, 354

Badness: 0.748 × 10-3

11-limit

Subgroup: 2.3.5.7.11

Comma list: 540/539, 4000/3993

Mapping[2 1 0 2 3], 0 3 0 5 -1], 0 0 1 0 1]]

Optimal ET sequence22, 50, 58, 72, 130, 152, 224, 354, 506e, 578, 730e, 1084de, 1308dee

Badness: 0.361 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 540/539, 729/728, 1575/1573

Mapping: [2 1 0 2 3 -2], 0 3 0 5 -1 13], 0 0 1 0 1 0]]

Optimal ET sequence22f, 36, 58, 72, 130, 224, 354, 578

Badness: 0.535 × 10-3

Cerberus

Subgroup: 2.3.5.7.11.13

Comma list: 351/350, 364/363, 540/539

Mapping: [2 1 0 2 3 1], 0 3 0 5 -1 -4], 0 0 1 0 1 2]]

Optimal ET sequence22, 50, 58, 72, 130

Badness: 0.766 × 10-3

Minos

Subgroup: 2.3.5.7.11

Comma list: 540/539, 12005/11979

Mapping[1 0 2 1 2], 0 2 4 3 4], 0 0 -5 -1 -3]]

mapping generators: ~2, ~121/70, ~49/33

Optimal ET sequence9, 49, 58, 72, 130, 193, 202, 467

Badness: 0.886 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 364/363, 540/539, 676/675

Mapping: [1 0 2 1 2 1], 0 2 4 3 4 7], 0 0 -5 -1 -3 -5]]

Optimal ET sequence9, 54, 58, 72, 121, 130, 193

Badness: 0.724 × 10-3

Persephone

Subgroup: 2.3.5.7.11

Comma list: 540/539, 88209/87500

Mapping[1 0 4 -2 10], 0 1 4 0 7], 0 0 -5 3 -11]]

mapping generators: ~2, ~3, ~100/33

Optimal ET sequence50, 53, 58, 103, 108, 111, 161, 214, 272, 375, 1022bcde, 1236bcde, 1397bcde

Badness: 2.015 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 351/350, 540/539, 847/845

Mapping: [1 0 4 -2 10 7], 0 1 4 0 7 5], 0 0 -5 3 -11 -7]]

Optimal ET sequence50, 53, 58, 103, 108, 111, 161, 214, 375, 700cdef, 861bcdef, 1075bcdef, 1236bcdef, 1450bcdef

Badness: 0.997 × 10-3

Hypnos

Subgroup: 2.3.5.7.11

Comma list: 540/539, 72171/71680

Mapping[1 0 0 -3 8], 0 3 0 11 -13], 0 0 1 0 1]]

mapping generators: ~2, ~81/56, ~5

Optimal ET sequence19, 36, 53, 72, 161, 197e, 214, 233, 286, 358, 591be, 663be, 949bce

Badness: 1.629 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 169/168, 540/539, 729/728

Mapping: [1 0 0 -3 8 0], 0 3 0 11 -13 7], 0 0 1 0 1 0]]

Optimal ET sequence19, 36, 53, 72, 125f, 197ef

Badness: 1.439 × 10-3