# staltz/matrixmultiplication.xyz

Repository: https://github.com/staltz/matrixmultiplication.xyz
Canonical: https://ross.abutalabs.com/products/matrixmultiplicationxyz
Homepage: http://matrixmultiplication.xyz/
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2022-01-21T16:47:50+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3641, "days_push": 1685, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1217, forks 71 (observed 2026-08-28T04:04:01.431573+00:00)

## What it is
An interactive web-based matrix multiplication calculator that visualizes the 'waterfall method' for educational purposes. It is also a reference codebase demonstrating how to structure Cycle.js applications with TypeScript.

## Use cases
- visualize how matrix multiplication works step by step
- learn linear algebra matrix multiplication interactively
- teach students the waterfall method for multiplying matrices
- check homework matrix multiplication results
- study how to structure a Cycle.js app with TypeScript

## When to choose
- you are a student struggling to understand matrix multiplication mechanics
- you want an interactive visual explanation rather than a static formula
- you want a small-to-medium real-world Cycle.js codebase to learn from

## When to avoid
- you need a high-performance numerical linear algebra library
- you need to multiply large matrices or use it in production math pipelines
- you don't use Cycle.js and only want a calculator without learning its stack

## Facets
- artifact type: application
- maturity: maintenance
- function: data-visualization
- domain: education, mathematics, web-development, frontend
- platform: browser
- tags: matrix-multiplication, linear-algebra, interactive-calculator, cyclejs, learning-resource, education, web

## Member repositories
- staltz/matrixmultiplication.xyz (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:01.431573+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 2026-08-30T06:17:09.695104+00:00, confidence not recorded.
  - readme: https://github.com/staltz/matrixmultiplication.xyz (fetched 2026-08-28T04:04:01.431573+00:00, sha 7e6cfefb2fa9)
  - homepage: http://matrixmultiplication.xyz/ (fetched 2026-08-29T12:24:57.674388+00:00, sha eaa6e0eafe4b)
- Data as of 2026-08-30T08:39:29.467469+00:00.