mathdotnet.com

Math.NET currently maintains four active libraries: Numerics, Symbolics, Filtering, and Spatial. Four older projects—Iridium, Classic, Linq Algebra, and Yttrium—are archived. If you are starting a new .NET project, choose from the active set; the archived libraries are listed on the site only for historical reference and should not be selected for new development.

Active Math.NET projects

These are the toolkits the Math.NET initiative currently builds and maintains.

Choosing among the active libraries

The four active projects target different problem domains, so the right pick depends on what you need to compute:

• General numerical work — solving linear systems, generating random numbers, fitting or interpolating data, working with probability distributions: use Numerics. It is the broadest of the set and the one aimed at both advanced and everyday needs of .NET developers.
• Symbolic manipulation — working with expressions algebraically rather than numerically: use Symbolics. Note that it is described as a basic library, so check that its scope matches your requirements before committing.
• Digital signal processing — designing filters and running them over data streams: use Filtering.
• Geometry — spatial/geometric computations: use Spatial.

Archived Math.NET projects

The following projects appear on the site under an "Archived Projects" heading:

• Math.NET Iridium
• Math.NET Classic
• Math.NET Linq Algebra
• Math.NET Yttrium

Because they are archived, treat them as inactive. The site does not present them as maintained toolkits, and no maintenance commitments are stated for them. In practice this means:

• Do not adopt them for new projects.
• If you encounter them in existing code, plan a migration path to an active equivalent rather than expecting updates.
• Do not assume documentation, fixes, or compatibility work will continue.

How to get the active libraries

The Math.NET site points to GitHub, NuGet, and Discussions as its distribution and community channels. For a .NET project, NuGet is the natural installation route for the active libraries; GitHub is where the source lives. The site itself does not state pricing or licensing terms beyond describing Math.NET as an open-source initiative, so confirm the specific license of each package on its own repository or NuGet page before relying on it.

Quick decision guide

1. Identify your domain: numerical, symbolic, signal processing, or geometry.
2. Match it to Numerics, Symbolics, Filtering, or Spatial respectively.
3. Verify the library's scope fits your task—especially for Symbolics, which is explicitly basic.
4. Install via NuGet and consult GitHub/Discussions for support.
5. If you find Iridium, Classic, Linq Algebra, or Yttrium in your dependency chain, treat it as a legacy item and migrate.

Math.NET is an open-source initiative that builds and maintains toolkits covering fundamental mathematics for .NET developers. It targets both advanced and everyday mathematical needs, so it fits anyone working in C#, F#, or other .NET languages who needs numerical routines, symbolic algebra, signal processing, or geometry without writing those foundations from scratch. The project is distributed through GitHub and NuGet, with discussions hosted at @MathDotNet.

What Math.NET actually is

Math.NET is not a single library. It is an umbrella project made up of several independent toolkits, each focused on a different area of mathematics. You adopt only the pieces you need.

There are also archived projects that are no longer active: Math.NET Iridium, Math.NET Classic, Math.NET Linq Algebra, and Math.NET Yttrium. Treat these as historical rather than as current choices.

Who it is for

The stated audience is .NET developers, from those handling routine numerical tasks to those needing more advanced scientific or engineering computation. If your work involves solving linear systems, generating random variates, designing filters, or manipulating symbolic expressions inside a .NET codebase, these toolkits are aimed at you.

How to get and use it

The project points to GitHub and NuGet as its distribution channels. In practice that means you add the relevant package through NuGet rather than downloading source manually, and you follow or contribute to development on GitHub. The @MathDotNet discussions channel is where community questions and project conversation happen.

Because each toolkit covers a distinct domain, the practical first step is to identify which one matches your task — Numerics for general computation, Symbolics for algebra, Filtering for signal work, Spatial for geometry — and then bring in only that package.

A note on scope

The project describes Symbolics as "basic," so it is not positioned as a full-featured computer algebra system. Spatial is described as aiming to become a geometry library, which signals it may be less mature than the numerical toolkit. Numerics lists the broadest set of covered topics and is the most clearly defined of the group.

Math.NET is an open-source initiative that builds and maintains toolkits covering fundamental mathematics for .NET developers, targeting both advanced and everyday needs. It is organized into several separate libraries, each addressing a different area of mathematics. The currently active libraries are Math.NET Numerics, Math.NET Symbolics, Math.NET Filtering, and Math.NET Spatial. Several older projects — Iridium, Classic, Linq Algebra, and Yttrium — are archived.

Active libraries

Math.NET Numerics

The numerical computing library. It aims to provide methods and algorithms for numerical computations in science, engineering, and everyday use. Covered topics include:

• Special functions
• Linear algebra
• Probability models
• Random numbers
• Interpolation
• Integral transforms
• And more

This is the library to reach for when you need general-purpose numerical work: solving linear systems, sampling from distributions, generating random numbers, or interpolating data.

Math.NET Symbolics

A basic open-source computer algebra library for .NET and Mono, written entirely in F#. Use it when you need symbolic manipulation rather than floating-point numerics — for example, working with expressions algebraically instead of evaluating them numerically.

Math.NET Filtering

The digital signal processing toolkit, previously known as Neodym. It aims to provide:

• An infrastructure for digital filter design
• Applying those filters to data streams using data converters
• Digital signal generators

Choose this when your task involves designing filters or processing signal data streams.

Math.NET Spatial

A geometry library for .NET and Mono. It is intended for spatial and geometric computation.

Archived projects

The following projects are no longer active:

• Math.NET Iridium
• Math.NET Classic
• Math.NET Linq Algebra
• Math.NET Yttrium

If you encounter references to these in older code or documentation, treat them as historical rather than current options.

Choosing between them

The libraries are distributed via GitHub and NuGet, with discussions hosted at @MathDotNet. If your need is general numerical computation, start with Numerics; pick Symbolics, Filtering, or Spatial only when your problem falls specifically within symbolic algebra, signal processing, or geometry.

Math.NET is an open-source initiative that builds and maintains toolkits for fundamental mathematics, aimed at the advanced and everyday needs of .NET developers. You can get it through GitHub (source code) and NuGet (packages), and it targets .NET and Mono. The project also offers Discussions and the @MathDotNet social account for community contact.

What "open source" means here

Math.NET describes itself as an "opensource initiative." Its libraries are distributed as open-source projects, with source code hosted on GitHub and packages published via NuGet. That combination is what lets you both read/modify the code and consume it as a normal dependency.

How to get Math.NET

The site points to two primary distribution channels:

• GitHub — source code and project repositories.
• NuGet — package installation for use in your projects.

For most developers, NuGet is the practical entry point: you add the relevant package to your .NET or Mono project and reference it in code. GitHub is where you go if you want to inspect, build, or contribute to the source.

The libraries and what each does

Archived projects

The following are listed as archived and are not part of the current active set:

• Math.NET Iridium
• Math.NET Classic
• Math.NET Linq Algebra
• Math.NET Yttrium

If you encounter references to these, treat them as historical rather than current options.

Where to ask questions and follow updates

• GitHub Discussions — the discussion channel linked from the project.
• @MathDotNet — the project's social account.

Choosing what to install

• Need general numerical work (linear algebra, statistics, random numbers)? Start with Math.NET Numerics.
• Need symbolic manipulation? Use Math.NET Symbolics.
• Need digital filters or signal generation? Use Math.NET Filtering.
• Need geometry types and operations? Use Math.NET Spatial.

Because these are separate libraries, install only the ones your project actually uses rather than assuming a single monolithic package.

Math.NET Numerics is the numerical computing toolkit within the Math.NET open-source initiative, and it covers special functions, linear algebra, probability models, random numbers, interpolation, integral transforms, and more. It targets .NET developers working on scientific, engineering, and everyday numerical tasks. You get it through NuGet, and the project is developed on GitHub with community discussions hosted at @MathDotNet.

What Math.NET Numerics is for

Math.NET Numerics aims to provide methods and algorithms for numerical computations in science, engineering, and everyday use. That scope means it is a general-purpose numerical library rather than a single-purpose tool: you reach for it when your .NET application needs to compute something mathematical rather than just store or move data.

The topics it covers

According to the project's own description, the covered topics include:

• Special functions — the non-elementary functions that appear in statistics, physics, and engineering formulas.
• Linear algebra — matrix and vector operations, the backbone of most numerical work.
• Probability models — distributions and related constructs for modeling uncertainty.
• Random numbers — generation of random values, typically needed for simulation and sampling.
• Interpolation — estimating values between known data points.
• Integral transforms — transformations used in signal and data analysis.

The description closes the list with "and more," so treat this as the headline set of topics rather than an exhaustive inventory.

How it fits with the other Math.NET projects

Math.NET Numerics is one of several toolkits under the same initiative, each aimed at a different area:

If your task is numerical rather than symbolic, signal-processing, or geometry-related, Numerics is the relevant project.

How to get it

The initiative distributes its toolkits through GitHub and NuGet, and hosts discussions at @MathDotNet. For a .NET project, NuGet is the practical installation route; the GitHub repositories are where the source lives.

What to check before you commit

• Confirm the specific algorithm you need is actually present — the published topic list is a summary, not a guarantee for every function.
• Decide whether your problem is numerical (Numerics) or symbolic (Symbolics), since they are separate libraries.
• Note that Math.NET Iridium, Math.NET Classic, Math.NET Linq Algebra, and Math.NET Yttrium are archived projects, so avoid starting new work on them.