# jcoglan/sylvester

Vector, matrix and geometry math JavaScript

Repository: https://github.com/jcoglan/sylvester
Canonical: https://ross.abutalabs.com/products/sylvester
Homepage: http://sylvester.jcoglan.com
Language: JavaScript
License Family: other
Last push: 2019-05-13T07:43:54+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": 6633, "days_push": 2669, "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 1155, forks 125 (observed 2026-08-28T04:03:47.870008+00:00)

## What it is
Sylvester is a JavaScript library for vector, matrix, and geometry math, supporting any number of dimensions plus lines and planes in 3D space. It runs in browsers and on server-side JavaScript runtimes.

## Use cases
- do vector and matrix math in javascript
- compute dot and cross products in the browser
- linear algebra library for node.js
- model lines and planes in 3d space
- multiply matrices in javascript

## When to choose
- you need simple object-oriented vector/matrix operations in JavaScript
- you want a lightweight, dependency-free math library for browser or Node

## When to avoid
- you need GPU-accelerated or high-performance linear algebra for graphics or ML
- you need an actively maintained library with recent updates
- you need tensors or multidimensional arrays beyond vectors and matrices

## Facets
- artifact type: library
- maturity: maintenance
- function: math
- domain: graphics, web-development
- platform: browser, cross-platform
- tags: linear-algebra, vectors, matrices, geometry, javascript, algorithms, nodejs

## Member repositories
- jcoglan/sylvester (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:47.870008+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 2026-08-30T06:32:13.362149+00:00, confidence not recorded.
  - readme: https://github.com/jcoglan/sylvester (fetched 2026-08-28T04:03:47.870008+00:00, sha b7ee488dbe6b)
  - homepage: http://sylvester.jcoglan.com (fetched 2026-08-29T12:37:50.499507+00:00, sha 2c638d5928a0)
  - site_page: http://sylvester.jcoglan.com/docs.html (fetched 2026-08-29T12:37:50.508486+00:00, sha dc4b10edb762)
- Data as of 2026-08-30T08:39:29.467469+00:00.