ktsu.Semantics.Quantities 2.7.3

Prefix Reserved

dotnet add package ktsu.Semantics.Quantities --version 2.7.3

NuGet\Install-Package ktsu.Semantics.Quantities -Version 2.7.3

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="ktsu.Semantics.Quantities" Version="2.7.3" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="ktsu.Semantics.Quantities" Version="2.7.3" />
                    

                            Directory.Packages.props

<PackageReference Include="ktsu.Semantics.Quantities" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add ktsu.Semantics.Quantities --version 2.7.3

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: ktsu.Semantics.Quantities, 2.7.3"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package ktsu.Semantics.Quantities@2.7.3

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=ktsu.Semantics.Quantities&version=2.7.3
                    

                            Install as a Cake Addin

#tool nuget:?package=ktsu.Semantics.Quantities&version=2.7.3
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

ktsu.Semantics.Quantities

A metadata-generated, type-safe physical quantity system built on a unified vector model, with compile-time dimensional analysis, generated unit conversions and physics operators, and centralized physical constants.

ktsu.Semantics.Quantities is one package in the ktsu.Semantics family. If you use a single numeric storage type throughout a project, the alias packages ktsu.Semantics.Quantities.Double, .Float, and .Decimal let you drop the generic argument and write Mass instead of Mass<double>.

Introduction

ktsu.Semantics.Quantities gives you physical quantities as types, so a Force cannot be added to a Speed and multiplying a Mass by an AccelerationMagnitude yields a ForceMagnitude at compile time. Every quantity is generic over its numeric storage type (Mass<double>, Speed<float>, Length<decimal>), and all values are stored in SI base units.

The type surface is generated. A single source of truth, dimensions.json, drives a Roslyn incremental generator that emits the quantity records, their From{Unit} factories with built-in conversions, the cross-dimensional physics operators, and the physical constants. That is roughly 72 physical dimensions and over 200 generated quantity types, all committed to source so the project compiles without first running the generator.

Every quantity is a vector, and the dimensionality of its direction space is part of the type.

Form	Meaning	Sign	Examples
`IVector0`	magnitude only	always `>= 0`	`Speed`, `Mass`, `Energy`, `Distance`, `Area`
`IVector1`	signed 1D	signed	`Velocity1D`, `Force1D`, `Temperature`
`IVector2`	2D directional	per-component	`Velocity2D`, `Force2D`, `Acceleration2D`
`IVector3`	3D directional	per-component	`Velocity3D`, `Force3D`, `Position3D`
`IVector4`	4D directional	per-component	reserved (relativistic / spacetime)

IVectorN.Magnitude() (for N >= 1) returns the matching IVector0 quantity.

Features

Compile-time dimensional safety: illegal combinations do not compile, and cross-dimensional operators produce the correct result type.
Generated unit conversions: From{Unit} factories per declared unit (Mass.FromKilogram, Speed.FromMeterPerSecond, Length.FromFoot), converting to the SI base unit on construction, with In(unit) to convert back.
Unified vector model: IVector0 through IVector4, with Magnitude(), Dot, Cross, Normalize, and typed cross-quantity results (Force3D.Dot(Displacement3D) returns Energy).
Construction-time invariants: IVector0 magnitudes are guarded non-negative, and quantities where zero is unphysical (Wavelength, Period, HalfLife) are guarded strictly positive.
Physical constants: PhysicalConstants with domain-grouped PreciseNumber values and generic accessors that materialize into any T : INumber<T>.
Generator diagnostics: metadata problems (SEM001-SEM005) are caught at build time.

Installation

Package Manager Console

Install-Package ktsu.Semantics.Quantities

.NET CLI

dotnet add package ktsu.Semantics.Quantities

Package Reference

<PackageReference Include="ktsu.Semantics.Quantities" Version="x.y.z" />

For a project that uses one storage type everywhere, reference an alias package instead (or in addition) so you can omit the generic argument. See storage-type aliases.

Usage Examples

Basic Example: magnitudes and operators

using ktsu.Semantics.Quantities;

Mass<double> m = Mass<double>.FromKilogram(2.0);
Speed<double> v = Speed<double>.FromMeterPerSecond(3.0);

MomentumMagnitude<double> p = m * v;   // Mass * Speed -> MomentumMagnitude
double kg = m.Value;                   // stored SI-base value

// arithmetic and comparison are inherited
Speed<double> faster = v + Speed<double>.FromMeterPerSecond(5.0);
bool ok = faster > v;

// construction-time guard: a negative magnitude throws ArgumentException
// Speed<double>.FromMeterPerSecond(-1.0);

Vector quantities

using ktsu.Semantics.Quantities;

Force3D<double> f = new() { X = 3.0, Y = 4.0, Z = 0.0 };
ForceMagnitude<double> mag = f.Magnitude();     // matching Vector0 quantity, value 5.0
Force3D<double> unit = f.Normalize();

Displacement3D<double> d = new() { X = 1.0, Y = 0.0, Z = 0.0 };
Energy<double> work = f.Dot(d);                 // typed dot: Force . Displacement = Energy
Torque3D<double> torque = f.Cross(d);           // typed cross: Force x Displacement = Torque
Momentum3D<double> impulse = f * Duration<double>.Create(2.0);

Physical constants

using ktsu.Semantics.Quantities;

// domain-grouped, exact PreciseNumber values
var c = PhysicalConstants.Fundamental.SpeedOfLight;      // 299_792_458 m/s
var R = PhysicalConstants.Chemistry.GasConstant;         // 8.31446... J/(mol.K)

// generic accessors materialize into any T : INumber<T>
double g = PhysicalConstants.Generic.StandardGravity<double>();   // 9.80665
ForceMagnitude<double> weight = Mass<double>.FromKilogram(70.0) * AccelerationMagnitude<double>.Create(g);

API Reference

Hand-written runtime types

Type	Description
`SemanticQuantity<TSelf, T>`	Arithmetic base. `Create(T)` factory, `Quantity` value, and inherited `+ - * / -` operators. Divide by zero throws `DivideByZeroException`.
`PhysicalQuantity<TSelf, T>`	Abstract base for scalar quantities. Adds `Value`, `Dimension`, `IsPhysicallyValid`, comparison operators, and cross-dimension-aware `CompareTo`/`Equals`.
`IVector0<TSelf, T>`	Magnitude-only marker: `Value`, static `Zero`. Non-negative by construction.
`IVector1<TSelf, T>`	Signed single-axis: `Value`, static `Zero`.
`IVector2` / `IVector3` / `IVector4`	Directional vectors with `X`/`Y`/`Z`/`W`, `Length()`, `LengthSquared()`, `Dot`, `Distance`, `Normalize`; `IVector3` adds `Cross`.
`Vector0Guards`	`EnsureNonNegative(value, name)` and `EnsurePositive(value, name)`, used by generated `From{Unit}` factories.
`UnitSystem`	enum classifying units (`SIBase`, `SIDerived`, `Metric`, `Imperial`, ...).

Generated quantity types

Each generated quantity is a partial record Name<T> where T : struct, INumber<T>. A typical IVector0 quantity such as Mass<T> exposes:

Member	Description
`From{Unit}(T)`	e.g. `FromKilogram`, `FromGram`, `FromPound`. Converts to SI base and applies the guard.
`Create(T)`	Inherited base factory (value already in SI base units).
`Value`	The stored SI-base value.
`In(unit)`	Convert the value back to a specific unit.
typed operators	e.g. `Mass * AccelerationMagnitude -> ForceMagnitude`, `Mass / Volume -> Density`.

Vector quantities (Force3D<T>, Velocity2D<T>, ...) implement the matching IVectorN and add Magnitude() (returning the corresponding *Magnitude Vector0 quantity), Dot, Cross, and typed cross-quantity results.

Factory names use the singular lemma of each unit name verbatim (FromMeterPerSecond, FromRevolutionPerMinute). There is no pluralization step.

`PhysicalConstants`

Domain-grouped: nested static classes returning PreciseNumber, for example PhysicalConstants.Fundamental.SpeedOfLight, PhysicalConstants.ClassicalMechanics.StandardGravity, PhysicalConstants.Thermodynamics.WaterTriplePoint. Domain groups include Acoustics, AngularMechanics, Chemistry, ClassicalMechanics, FluidMechanics, Fundamental, NuclearPhysics, Optics, and Thermodynamics.
Generic: PhysicalConstants.Generic.Name<T>() materializes any constant into a T : INumber<T>.

Architecture

The system is metadata-driven. The single source of truth is Semantics.SourceGenerators/Metadata/dimensions.json (alongside units.json, magnitudes.json, conversions.json, domains.json, and logarithmic.json). A Roslyn incremental generator emits one record per quantity, a From{Unit} factory per declared unit, the cross-dimensional * / / / Dot / Cross operators declared in the metadata, and the PhysicalConstants surface. Logarithmic-scale quantities (decibels, cents, pH) are generated separately because they do not obey linear arithmetic.

Generated output is committed to Generated/, so the project compiles without first running the generator. For the full design and an end-to-end "add a dimension" walk-through, see:

Contributing

Contributions are welcome! Feel free to open issues or submit pull requests.

License

This project is licensed under the MIT License. See the LICENSE.md file for details.

Product	Compatible and additional computed target framework versions.
.NET	net8.0 is compatible. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 is compatible. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Product

.NET

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- ktsu.PreciseNumber (>= 1.7.21)
net8.0
- ktsu.PreciseNumber (>= 1.7.21)
net9.0
- ktsu.PreciseNumber (>= 1.7.21)

NuGet packages (4)

Showing the top 4 NuGet packages that depend on ktsu.Semantics.Quantities:

Package	Downloads
ktsu.ImGuiNodeEditor A comprehensive .NET library suite for building desktop applications with Dear ImGui. Provides application scaffolding with PID-controlled frame limiting, custom widgets (TabPanel, SearchBox, Knob, RadialProgressBar, DividerContainer, Grid), modal dialogs (file browser, input prompts, searchable lists), a theming system with 50+ built-in themes and scoped styling, and an attribute-based node graph editor with physics-based layout. Built on Hexa.NET.ImGui bindings and Silk.NET for cross-platform windowing.	5.2K
ktsu.Semantics.Quantities.Decimal A comprehensive .NET library for replacing primitive obsession with strongly-typed, self-validating domain models across four pillars: semantic strings with 50+ validation attributes, polymorphic path handling, metadata-generated semantic quantities, and musical value types. The quantity system covers 60+ physical dimensions and 200+ generated types under a unified vector model, with compile-time dimensional safety, generated unit conversions and physics relationships, centralized physical constants, and optional per-storage-type alias packages. The music types provide type-safe pitches, intervals, scales and modes, chords with symbol parsing and voicing, keys with roman-numeral analysis, and rational durations and time signatures. Features factory-pattern and dependency-injection support for building robust, maintainable scientific and domain-specific applications.	1.8K
ktsu.Semantics.Quantities.Double A comprehensive .NET library for replacing primitive obsession with strongly-typed, self-validating domain models across four pillars: semantic strings with 50+ validation attributes, polymorphic path handling, metadata-generated semantic quantities, and musical value types. The quantity system covers 60+ physical dimensions and 200+ generated types under a unified vector model, with compile-time dimensional safety, generated unit conversions and physics relationships, centralized physical constants, and optional per-storage-type alias packages. The music types provide type-safe pitches, intervals, scales and modes, chords with symbol parsing and voicing, keys with roman-numeral analysis, and rational durations and time signatures. Features factory-pattern and dependency-injection support for building robust, maintainable scientific and domain-specific applications.	1.8K
ktsu.Semantics.Quantities.Float A comprehensive .NET library for replacing primitive obsession with strongly-typed, self-validating domain models across four pillars: semantic strings with 50+ validation attributes, polymorphic path handling, metadata-generated semantic quantities, and musical value types. The quantity system covers 60+ physical dimensions and 200+ generated types under a unified vector model, with compile-time dimensional safety, generated unit conversions and physics relationships, centralized physical constants, and optional per-storage-type alias packages. The music types provide type-safe pitches, intervals, scales and modes, chords with symbol parsing and voicing, keys with roman-numeral analysis, and rational durations and time signatures. Features factory-pattern and dependency-injection support for building robust, maintainable scientific and domain-specific applications.	1.8K

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
2.7.3	42	7/17/2026
2.7.2	65	7/16/2026
2.7.1	71	7/15/2026
2.7.0	234	7/14/2026
2.6.0	136	7/14/2026
2.5.5	256	7/8/2026
2.5.4	183	7/7/2026
2.5.3	179	7/6/2026
2.5.2	181	7/3/2026
2.5.1	197	7/2/2026
2.5.0	170	7/1/2026
2.4.0	150	7/1/2026
2.3.1	159	6/30/2026
2.3.0	202	6/29/2026
2.2.0	162	6/28/2026
2.1.0	157	6/28/2026
2.0.2	155	6/28/2026
2.0.1	209	6/27/2026
1.1.3	169	6/25/2026
1.1.2	156	6/21/2026

## v2.7.3 (patch)

Changes since v2.7.2:

- Bump the ktsu group with 2 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.7.2 (patch)

Changes since v2.7.1:

- Bump the ktsu group with 3 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.7.1 (patch)

Changes since v2.7.0:

- Bump the system group with 1 update ([@dependabot[bot]](https://github.com/dependabot[bot]))
- Bump the microsoft group with 1 update ([@dependabot[bot]](https://github.com/dependabot[bot]))
- Bump the ktsu group with 2 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.7.0 (minor)

Changes since v2.6.0:

- [minor] Add color adjustment operations across color spaces ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.6.0 (minor)

Changes since v2.5.0:

- [patch] Fix Oklch assertion in color cross-conversion tests ([@matt-edmondson](https://github.com/matt-edmondson))
- [minor] Add cross-space conversions between all color types ([@matt-edmondson](https://github.com/matt-edmondson))
- fix(music): use ValueTuple.GetHashCode instead of System.HashCode for netstandard2.0 compatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- refactor(music): split Progression.TryParse into helpers to cut cognitive complexity and remove always-true check (SonarQube S3776/S2583) ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(music): update examples and references for Parse/TryParse rename and chart-style progressions ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): chart-style Arrangement ToString + Parse/TryParse + structural equality ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): chart-style Section ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music)!: replace bar-delimited Progression.Parse with chart-style ToString/Parse/TryParse + structural equality; migrate call sites ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): rename Form.FromPattern to Parse/TryParse, canonical ToString, structural equality ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Rest canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Note canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): ChordEvent canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): canonical Chord ToString, TryParse, ParseRoot via Notation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Key canonical ToString + Parse/TryParse; roman-numeral accidental via Notation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Scale canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Tempo canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Velocity canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): TimeSignature canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Duration canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Interval canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): rename Mode.FromName to Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): typed Pitch factory, rename FromName to Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): typed PitchClass factory, Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add NoteLetter and Accidental enums ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: implementation plan for music type-safe factories and canonical round-trip ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: revise music factories spec with canonical round-trip ToString and chart-style aggregate format ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: design spec for music type-safe factories and Parse/TryParse convention ([@matt-edmondson](https://github.com/matt-edmondson))
- [patch] docs: add per-package READMEs and turn root README into a family index ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.5.4 (patch)

Changes since v2.5.3:

- Bump the ktsu group with 2 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.5.3 (patch)

Changes since v2.5.2:

- Bump Microsoft.CodeAnalysis.Analyzers and Microsoft.CodeAnalysis.CSharp ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.5.2 (patch)

Changes since v2.5.1:

- Bump the ktsu group with 2 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.5.1 (patch)

Changes since v2.5.0:

- fix(music): use ValueTuple.GetHashCode instead of System.HashCode for netstandard2.0 compatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- refactor(music): split Progression.TryParse into helpers to cut cognitive complexity and remove always-true check (SonarQube S3776/S2583) ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(music): update examples and references for Parse/TryParse rename and chart-style progressions ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): chart-style Arrangement ToString + Parse/TryParse + structural equality ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): chart-style Section ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music)!: replace bar-delimited Progression.Parse with chart-style ToString/Parse/TryParse + structural equality; migrate call sites ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): rename Form.FromPattern to Parse/TryParse, canonical ToString, structural equality ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Rest canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Note canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): ChordEvent canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): canonical Chord ToString, TryParse, ParseRoot via Notation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Key canonical ToString + Parse/TryParse; roman-numeral accidental via Notation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Scale canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Tempo canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Velocity canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): TimeSignature canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Duration canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): Interval canonical ToString + Parse/TryParse ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): rename Mode.FromName to Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): typed Pitch factory, rename FromName to Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): typed PitchClass factory, Parse/TryParse, canonical ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add NoteLetter and Accidental enums ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: implementation plan for music type-safe factories and canonical round-trip ToString ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: revise music factories spec with canonical round-trip ToString and chart-style aggregate format ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: design spec for music type-safe factories and Parse/TryParse convention ([@matt-edmondson](https://github.com/matt-edmondson))
- [patch] docs: add per-package READMEs and turn root README into a family index ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.5.0 (minor)

Changes since v2.4.0:

- docs(music): document the analysis aggregate layer ([@matt-edmondson](https://github.com/matt-edmondson))
- test(music): lock guard/coverage contracts; dedupe chromatic scale check ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Form pattern extraction and named-form recognition ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Arrangement container ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Section structural unit ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add chromatic chord identification ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add key inference by diatonic fit ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(music): switch key inference to quality-weighted scoring ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add cadence detection ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add roman-numeral labeling and functional classification ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Progression.Parse bar-delimited chord syntax ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Progression core (construction, totals, empty rejection) ([@matt-edmondson](https://github.com/matt-edmondson))
- fix(music): drop CA1859 pragma; use IMusicalEvent helper in ChordEvent test ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add ChordEvent harmonic event type ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(music): implementation plan for analysis aggregate layer ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(music): design spec for analysis aggregate layer ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.4.0 (minor)

Changes since v2.3.0:

- test(strings): add As<T> round-trip test for Uuid ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): reconcile spec As<T> test bullet with implemented roster ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): document Identifiers package in README ([@matt-edmondson](https://github.com/matt-edmondson))
- chore(strings): finalize Identifiers package and document it ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add JwtToken identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add Iban identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add Isbn identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- style(strings): add trailing newline to IsCreditCardNumberAttribute.cs ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): use pattern-matching form in Tasks 5-6 (IDE0078) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add CreditCardNumber identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add Ulid identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): align plan Tasks 3-7 with repo conventions (ThrowsExactly, no using System, Ensure.NotNull) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(strings): add Uuid identifier type ([@matt-edmondson](https://github.com/matt-edmondson))
- chore(strings): scaffold Semantics.Strings.Identifiers package ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): correct empty-string handling in spec; add implementation plan ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(strings): spec for Semantics.Strings.Identifiers (Phase 0) ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.3.1 (patch)

Changes since v2.3.0:

- Bump the system group with 1 update ([@dependabot[bot]](https://github.com/dependabot[bot]))
- Bump the ktsu group with 10 updates ([@dependabot[bot]](https://github.com/dependabot[bot]))

## v2.3.0 (minor)

Changes since v2.2.0:

- docs(color): correct Oklab round-trip tolerance note in plan ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add NamedColors and gamma-regression tests ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add Oklab mix, lerp, distance, and gradient ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add WCAG luminance, contrast, and accessibility adjustment ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add HSL and HSV conversions ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add Oklab and Oklch perceptual spaces ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add hex and byte conversions (sRGB-interpreted) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): add Srgb space and gamma-correct sRGB<->linear boundary ([@matt-edmondson](https://github.com/matt-edmondson))
- docs(color): add semantic-domains roadmap, Semantics.Color spec and plan ([@matt-edmondson](https://github.com/matt-edmondson))
- style(color): strip UTF-8 BOM and add final newline (editorconfig) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(color): scaffold Semantics.Color with canonical linear Color type ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.2.0 (minor)

Changes since v2.1.0:

- docs: cover Semantics.Music score primitives, frequency, inversions, roman parsing ([@matt-edmondson](https://github.com/matt-edmondson))
- [minor] feat(music): score primitives, frequency bridge, inversions/transpose, roman-numeral parsing ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): parse roman numerals back into chords (inverse of RomanNumeralOf) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add chord inversions and Transpose on Chord/Scale/Key ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Pitch<->frequency (A440) and interval cents ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add score primitives (Velocity, Tempo, Note, Rest) with real-time conversion ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.1.0 (minor)

Changes since v2.0.0:

- Merge feature/semantics-music-types: musical value types ([@matt-edmondson](https://github.com/matt-edmondson))
- [minor] feat(music): musical value types (pitch, interval, scale, chord, key, duration) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Key with roman-numeral function; spell chromatic degrees conventionally (flat-preference) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Chord engine with parsing, tones, and voicing (full HeatDeathRomance vocabulary) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add TimeSignature with bar and beat durations ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add rational Duration with arithmetic and dotted/tuplet support ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Scale and ScaleDegree with degree resolution ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Mode with full standard scale catalog (diatonic, jazz, symmetric, pentatonic) ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Interval with octave folding and pitch difference ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): add Pitch with MIDI/name conversion and transpose ([@matt-edmondson](https://github.com/matt-edmondson))
- feat(music): scaffold Semantics.Music with PitchClass ([@matt-edmondson](https://github.com/matt-edmondson))
- fix(packaging): unblock the 2.0 release pipeline [patch] ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.0.2 (patch)

Changes since v2.0.1:

- Sync global.json ([@ktsu[bot]](https://github.com/ktsu[bot]))

## v2.0.1 (patch)

Changes since v2.0.0:

- fix(packaging): unblock the 2.0 release pipeline [patch] ([@matt-edmondson](https://github.com/matt-edmondson))

## v2.0.0 (major)

Changes since v1.0.0:

- Revert "Update pack supressions" ([@matt-edmondson](https://github.com/matt-edmondson))
- Update pack supressions ([@matt-edmondson](https://github.com/matt-edmondson))
- release: ktsu.Semantics 2.0.0 — unified vector quantities [major] ([@matt-edmondson](https://github.com/matt-edmondson))
- fix: drop unreferenced SourceLink package versions (KTSU0005 under ktsu.Sdk 2.11.0) ([@matt-edmondson](https://github.com/matt-edmondson))
- fix: restore icon.png as LFS pointer after main merge ([@matt-edmondson](https://github.com/matt-edmondson))
- Merge remote-tracking branch 'origin/main' into vectors ([@matt-edmondson](https://github.com/matt-edmondson))
- fix(generator): annotate nullable referenceExpr to clear CS8600 ([@matt-edmondson](https://github.com/matt-edmondson))
- docs: reflect 2.0 state, rebrand to 'semantic quantities', document alias packages ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: storage-type alias packages for ktsu.Semantics.Quantities ([@matt-edmondson](https://github.com/matt-edmondson))
- chore: sync stale Units.g.cs and add generated-files CI guard ([@matt-edmondson](https://github.com/matt-edmondson))
- fix: close V0 release blockers and drop out-of-support TFMs ([@matt-edmondson](https://github.com/matt-edmondson))
- fix(build): make vectors build under .NET 10 SDK ([@matt-edmondson](https://github.com/matt-edmondson))
- Merge remote-tracking branch 'origin/main' into vectors-merge-trial ([@matt-edmondson](https://github.com/matt-edmondson))
- Add System.Text.Json package reference to project files ([@matt-edmondson](https://github.com/matt-edmondson))
- Update ktsu.Sdk versions to 2.10.2 ([@matt-edmondson](https://github.com/matt-edmondson))
- Update ktsu.Sdk versions to 2.10.1 ([@matt-edmondson](https://github.com/matt-edmondson))
- refactor(generator): use singular-lemma factory names, drop factoryName ([@Claude](https://github.com/Claude))
- docs: log scales are metadata-generated; Percent/Gain convergence ([@Claude](https://github.com/Claude))
- refactor(quantities): converge log scales and audio types on metadata ([@Claude](https://github.com/Claude))
- feat(generator): LogarithmicScalesGenerator — log scales from logarithmic.json ([@Claude](https://github.com/Claude))
- refactor(quantities): align audio-engineering types with the vectors branch ([@Claude](https://github.com/Claude))
- docs: add 1.x → 2.0 migration guide ([@Claude](https://github.com/Claude))
- test(quantities): cover backfilled dimensions and log-scale companions ([@Claude](https://github.com/Claude))
- feat(quantities): hand-written logarithmic-scale companions ([@Claude](https://github.com/Claude))
- feat(quantities): backfill missing dimensions and acoustic overloads from main ([@Claude](https://github.com/Claude))
- Update NuGet package versions in Directory.Packages.props ([@matt-edmondson](https://github.com/matt-edmondson))
- Fix IDE0370 build errors from .NET 10 SDK analyzer ([@Claude](https://github.com/Claude))
- feat(quantities): backfill unit catalog and constants domains from main ([@Claude](https://github.com/Claude))
- fix(generator): materialise Generic constants via PreciseNumber.To<T>() ([@Claude](https://github.com/Claude))
- chore: refresh generated snapshots ([@Claude](https://github.com/Claude))
- feat(generator): declare Frequency x Length = Velocity wave relationship ([@Claude](https://github.com/Claude))
- fix(quantities): add comparison operators to PhysicalQuantity (CA1036) ([@Claude](https://github.com/Claude))
- Merge remote-tracking branch 'origin/main' into claude/vectors-sync-progress-ofoith ([@Claude](https://github.com/Claude))
- Add audio-engineering quantities and normalized parameter tapers ([@Claude](https://github.com/Claude))
- chore: drop unnecessary null-forgiving operators + silence coverage warning ([@Claude](https://github.com/Claude))
- feat(quantities): canonical IPhysicalQuantity surface + typed In() (closes #59) ([@Claude](https://github.com/Claude))
- docs(architecture): document physics generator pipeline (closes #61) ([@Claude](https://github.com/Claude))
- feat(generator): SEM004 — flag dimensions.json units missing from units.json ([@Claude](https://github.com/Claude))
- docs: fix stale README + guides — plural factories, V3 object-init, real PhysicalConstants surface ([@Claude](https://github.com/Claude))
- feat(quantities): per-overload physicalConstraints + EnsurePositive guard (closes #51) ([@Claude](https://github.com/Claude))
- test(quantities): generator-output invariants — no duplicate signatures, commutative * (closes #57) ([@Claude](https://github.com/Claude))
- feat(generator): SEM003 diagnostic + form-specific relationships (closes #58) ([@Claude](https://github.com/Claude))
- feat(generator): plural From{Unit} factory naming + form matrix docs (closes #49) ([@Claude](https://github.com/Claude))
- Merge vectors (post #70) into rebase-issue-48: combine multi-unit factories with SEM002 + AnalyzerReleases ([@Claude](https://github.com/Claude))
- Merge vectors into work/issue-48: combine multi-unit factories with V0 non-negativity ([@Claude](https://github.com/Claude))
- feat(generator): add SEM002 metadata validation; refresh stale generator output ([@Claude](https://github.com/Claude))
- Merge remote-tracking branch 'origin/vectors' into work/issue-48 ([@Claude](https://github.com/Claude))
- feat(quantities): enforce V0 non-negativity and absolute V0-V0 subtraction ([@Claude](https://github.com/Claude))
- feat(generator): emit From{Unit} factory for every availableUnit ([@Claude](https://github.com/Claude))
- test: cover IVector*/Magnitude/Dot/Cross and overload conversions ([@Claude](https://github.com/Claude))
- feat(generator): emit SEM001 when relationship references unknown dimension ([@Claude](https://github.com/Claude))
- Pass 2: drop main-imported tests that reference removed hand-written types ([@Claude](https://github.com/Claude))
- Merge main into vectors (structural reconciliation) ([@Claude](https://github.com/Claude))
- docs: align docs with unified vector model and current API ([@Claude](https://github.com/Claude))
- feat: Add new skill for creating physics quantity types with metadata-driven process ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance project configuration: enable compiler-generated files and set output path; remove specific generated files from compilation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Add new unit categories and conversion factors for fluid mechanics and chemistry ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Enhance dimensions and units metadata with additional overloads and derived units ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Update CodeBlocker package version and refactor scope usage in generators and templates ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor dimensions metadata structure and enhance vector form definitions ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Update dimensions.json schema to unify vector representation and enhance dimensional relationships ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Enhance cross-dimensional operations and relationships in unified vector representation ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Define proposed base types and naming patterns for unified vector representation of quantities ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Add strategy document for unified vector representation of quantities ([@matt-edmondson](https://github.com/matt-edmondson))
- refactor: Simplify vector method implementations by removing unnecessary scope blocks ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Implement QuantitiesGenerator for generating scalar and vector quantity types from dimensions.json ([@matt-edmondson](https://github.com/matt-edmondson))
- refactor: Remove unused using directives for ktsu.Semantics.Strings in test files ([@matt-edmondson](https://github.com/matt-edmondson))
- feat: Add Microsoft.Bcl.AsyncInterfaces package and refactor path handling ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove obsolete validation attributes and related files for path and text validation ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove .cursorindexingignore to eliminate unnecessary indexing rules ([@matt-edmondson](https://github.com/matt-edmondson))
- Update project file to target .NET 10.0 and remove obsolete configurations ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove legacy build scripts ([@matt-edmondson](https://github.com/matt-edmondson))
- Add ktsu.RoundTripStringJsonConverter package reference and update SemanticString to use its JsonConverter ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor validation strategy null checks to use Ensure.NotNull for consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance test assertions with descriptive messages for clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Update suppression targets in CompatibilitySuppressions.xml for attribute consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove unnecessary blank line in PerformanceRegressionTests class ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove performance variance checks from quantity creation test for consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Update .NET version to 10.0 and adjust coverage reporting for SonarQube integration ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor validation attributes and update path-related records for consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Update System.Memory package version to 4.6.3 ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor null checks to use Ensure instead of Guard; update target frameworks and package references ([@matt-edmondson](https://github.com/matt-edmondson))
- Increase performance variance threshold in regression tests to 70% for CI environment consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove Polyfill package references and update test assertions for clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Add DirectoryName type and improve path validation semantics ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance project detection logic to support multi-project solutions ([@matt-edmondson](https://github.com/matt-edmondson))
- Add compatibility supression files ([@matt-edmondson](https://github.com/matt-edmondson))
- Modernize codebase and simplify multi-framework support ([@matt-edmondson](https://github.com/matt-edmondson))
- Update project configurations and SDK versions ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor testing and coverage configuration ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for AcousticOperator and PhysicalDimension extensions ([@matt-edmondson](https://github.com/matt-edmondson))
- Update Invoke-DotNetTest function to remove unnecessary `--no-build` flag from dotnet test command for improved test execution. ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for AcousticImpedance, ReflectionCoefficient, and SoundSpeed classes ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for AcousticDirectionalityIndex functionality ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove obsolete cursor ignore files to streamline project structure ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor Exposure calculations to use CoulombPerKilogram unit ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for various SemanticString validators ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for casing and line count validators in SemanticString ([@matt-edmondson](https://github.com/matt-edmondson))
- Add unit tests for Casing and Contracts validation in SemanticString ([@matt-edmondson](https://github.com/matt-edmondson))
- Update RegexMatchAttribute to include a timeout in Regex matching for improved performance and reliability. This change ensures that the regex operation does not hang indefinitely by setting a one-second timeout, enhancing the overall validation process. ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor SemanticDirectoryPath class to improve content retrieval method naming and enhance error handling. The `Contents` property has been renamed to `GetContents` for clarity, and synchronous handling has been implemented to ensure compatibility with older .NET versions. ([@matt-edmondson](https://github.com/matt-edmondson))
- Fix argument exception message assertion in SemanticStringAdditionalTests for improved clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove obsolete files and clean up project structure ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance validation error messages in ContainsAttribute, EndsWithAttribute, and StartsWithAttribute classes ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor PhysicalDimensions class to use IReadOnlySet for standard physical dimensions and update test classes to static for consistency. This improves clarity and aligns with coding standards across the project. ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove unnecessary using directives from test files for improved clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor directory path content retrieval methods for consistency and clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Fix missing usings ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor path handling code for improved readability and consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor directory path implementations to support synchronous enumeration for older .NET versions ([@matt-edmondson](https://github.com/matt-edmondson))
- Add System.Memory package and implement path polyfills for .NET compatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance null argument validation in RelativeFilePath for .NET compatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- Implement polyfill for ArgumentNullException in path classes for compatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- Add path-related polyfills and refactor namespaces for clarity ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor SemanticString methods to utilize WeakString for span-based operations ([@matt-edmondson](https://github.com/matt-edmondson))
- Update project configuration and refine string handling methods ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance semantic string handling with read-only span support ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor validation framework and introduce new path semantics ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor validation attributes to enhance initialization and validation logic ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor validation attributes to remove FluentValidation dependency ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor project structure and update SDK versions ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor project configuration and enhance SDK management ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance project configuration and code generation capabilities ([@matt-edmondson](https://github.com/matt-edmondson))
- Code generation ([@matt-edmondson](https://github.com/matt-edmondson))
- Add new static factory methods for length and position quantities in micrometers, nanometers, and various vector dimensions ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance quantity classes with additional static factory methods for creating instances from nanometers and molar concentrations ([@matt-edmondson](https://github.com/matt-edmondson))
- Implement static factory methods for float quantity classes across various domains ([@matt-edmondson](https://github.com/matt-edmondson))
- Add extension methods for double and float physical quantities ([@matt-edmondson](https://github.com/matt-edmondson))
- Implement static factory methods for quantity classes in acoustic, chemical, electrical, fluid dynamics, mechanics, nuclear, optical, and thermal domains ([@matt-edmondson](https://github.com/matt-edmondson))
- Add new quantity classes and methods for acoustic, chemical, electrical, fluid dynamics, mechanics, nuclear, optical, and thermal domains ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor and enhance quantity classes and tests ([@matt-edmondson](https://github.com/matt-edmondson))
- Update package versions and enhance build scripts ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor exception assertions in unit tests for consistency ([@matt-edmondson](https://github.com/matt-edmondson))
- Refactor performance regression tests to set CI-friendly targets ([@matt-edmondson](https://github.com/matt-edmondson))
- Update package versions and refine project metadata ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance path handling and testing for directory and file combinations ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance semantic string type conversions and path handling ([@matt-edmondson](https://github.com/matt-edmondson))
- Update copyright notice, package versions, and enhance winget manifest generation script ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance performance regression tests with updated targets and optimizations ([@matt-edmondson](https://github.com/matt-edmondson))
- Remove BenchmarkMemoryAllocation Test Due to Incompatibility ([@matt-edmondson](https://github.com/matt-edmondson))
- Optimize Performance Benchmarks to Reduce Memory Allocation ([@matt-edmondson](https://github.com/matt-edmondson))
- Enhance Performance Benchmarks and Derived Cursor Rules ([@matt-edmondson](https://github.com/matt-edmon... (truncated due to NuGet length limits)