# eigenteam/eigen-git-mirror

THIS MIRROR IS DEPRECATED -- New url: https://gitlab.com/libeigen/eigen

Repository: https://github.com/eigenteam/eigen-git-mirror
Canonical: https://ross.abutalabs.com/products/eigen-git-mirror
Language: C++
License: NOASSERTION
License Family: other
Topics: cplusplus, linear-algebra, matrix, sparse-matrix, solvers, blas, lapack
Last push: 2022-04-17T23:28:42+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3201, "days_push": 1599, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1820, forks 553 (observed 2026-08-28T04:05:40.882472+00:00)

## What it is
A deprecated GitHub mirror of the Eigen C++ template library for linear algebra, now hosted officially on GitLab. This mirror is no longer synced and will be deleted.

## Use cases
- linear algebra computations in C++
- matrix and vector operations
- sparse matrix solvers
- BLAS/LAPACK-style numeric routines

## When to choose
- you need the historical Eigen source from GitHub

## When to avoid
- starting new projects - use https://gitlab.com/libeigen/eigen instead
- expecting updates or sync with upstream

## Facets
- artifact type: library
- maturity: abandoned
- function: math
- domain: developer-tools
- platform: cpp, cross-platform
- tags: linear-algebra, matrix, sparse-matrix, blas, lapack, deprecated-mirror, eigen, algorithms

## Member repositories
- eigenteam/eigen-git-mirror (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:40.882472+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:19:58.544515+00:00, confidence not recorded.
  - readme: https://github.com/eigenteam/eigen-git-mirror (fetched 2026-08-28T04:05:40.882472+00:00, sha c8b744b309f5)
- Data as of 2026-08-30T08:39:29.467469+00:00.