Mathematical theory: Difference between revisions
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Revision as of 18:38, 16 July 2026
Tuning theory can become heavily mathematical, and here are links to some of the pages which wade into deeper waters.
It is recommended to read the pages listed on general theory first before exploring this page, as they lay the groundwork.
Intervals
Interval metrics
Chords
Musical information theory
- Categorical entropy, mutual information, and channel capacity
- Harmonic entropy
- Riemann zeta function
- Maximal dissonance tuning
Interval classification
- Delta-N ratio
- Non radical intervals with musical significance
- abc, high quality commas, and epimericity
- Don Page comma
Regular temperaments
Foundational theory
- Mathematical theory of regular temperaments
- Monzos and interval space
- Vals and tuning space
- Temperament mapping matrix
- Dual list
- Mathematical theory of saturation
- Temperament merging
- Temperament addition
Subgroup temperaments
- Subgroup temperament families, relationships, and genes
- Subgroup monzos and vals
- Tempered monzos and vals
- Subgroup basis matrix
- Meet and join
- k*N subgroups
Exterior algebra
- Exterior algebra
- Dave Keenan & Douglas Blumeyer's guide to EA for RTT
- Wedgie and Plücker coordinates
- Recoverability
- Hodge dual
- Interior product
Temperament measures and optimization
- Optimization
- Target tuning
- Cangwu badness
- Generator complexity
- TOP tuning
- BOP tuning
- Tenney–Euclidean tuning
- Tenney–Euclidean temperament measures
- Tenney–Euclidean metrics
- Generalized Tenney norms and Tp interval space
- Generalized Tenney dual norms and Tp tuning space
- Weil norm, Tenney–Weil norm, and TWp interval and tuning space
- Tp tuning
- Constrained tuning
- Logarithmic approximants
Temperament classification
- Rank-2 temperament (include linear temperaments)
- Rank-3 temperament (include planar temperaments)
(Rank-1 temperaments are equal-step tunings.)
- Temperament families and clans
- Cluster temperament
- Associated temperament
- Microtemperament and exotemperament
- Trivial temperament
- Sane and insane temperaments
Scales
MOS scales
- Periodic scale
- MOS scale
- Mathematics of MOS
- MODMOS scale
- Modal UDP Notation
- Graph-theoretic properties of scales
Scale measurements
- Consonant class scale
- Distributional evenness
- Maximum variety
- Lumma stability
- Structure metric
- Hahn distance
Lattices and scale shapes
- Projection pair
- Modulatory space
- Detempering
- Generator preimage
- Fokker block
- Minkowski block
- Minkowski reduced bases for Fokker groups of certain vals
- 7-limit symmetrical lattices
- Comma-based lattices