Hi.

Le mer. 18 févr. 2026 à 22:57, Johann Sorel via dev
<[email protected]> a écrit :
>
> Hello,
>
> I am Johann Sorel, working on the Apache SIS (Spatial Information
> System) project.
>
> In the project we have growing needs for advanced math, array, geometry,
> scene capabilities.
> Since we did not find what we need in other projects, we are developing
> them.
>
> The logical action would be to have those in the appropriate Apache
> project, such as Apache commons Math and Geometry.
> But those look abandoned.

Neither "Commons Math" nor "Commons Geometry" are abandoned.
The latter was spun off from the former, with enhanced performance
and new features.

> - commons-math3 latest is from 2016

The 3.x line is not supported anymore.

> - commons-math4 beta is from 2022

Math v3.x (and earlier) was monolithic (and became bloated).
Version 4 aimed at modularization, while several components
were spun off (with improved design and for better maintenance):
 * Commons Geometry
 * Commons RNG
 * Commons Numbers
 * Commons Statistics

The overhaul of the remaining "legacy" packages of "Math" is
work-in-progress, but has stalled...

> - commons-geometry1 is from 2021

It has been stable since then.

>
> Are those replaced ?

No.

> have they been merged in another project ?

No.

You are welcome to revive development. :-)

Regards,
Gilles

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