# stacks/stacks-project

Repository for the Stacks Project

Repository: https://github.com/stacks/stacks-project
Canonical: https://ross.abutalabs.com/products/stacks-project
Homepage: http://stacks.math.columbia.edu
Language: TeX
License: NOASSERTION
License Family: other
Last push: 2026-07-28T20:28:51+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 35, longevity 100
- inputs: {"age_days": 5164, "days_push": 36, "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 1047, forks 172 (observed 2026-08-28T04:03:22.159574+00:00)

## What it is
The Stacks Project is a collaborative, open-source textbook and reference work on algebraic stacks and the algebraic geometry needed to define them, written in LaTeX and rendered online. The repository contains the TeX source files, build tooling, and contribution workflow for the continuously updated text hosted at stacks.math.columbia.edu.

## Use cases
- read an authoritative reference on algebraic stacks and schemes
- look up a lemma or theorem by its permanent tag
- contribute corrections or new chapters to an open math textbook
- build the PDF/DVI versions of the Stacks project locally
- search a comprehensive graduate-level algebraic geometry reference online

## When to choose
- you are a graduate student or researcher needing a rigorous reference for algebraic geometry or stacks
- you want to cite results with stable permanent tags
- you want to contribute to or extend an open mathematical text

## When to avoid
- you need an introductory or beginner-friendly algebraic geometry text
- you want software or a library rather than a mathematical reference
- you need offline-first documentation with no LaTeX build step

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, markdown
- domain: mathematics, education, tutorials
- platform: cli
- tags: algebraic-geometry, algebraic-stacks, latex, open-textbook, collaborative-writing, mathematics-reference, web-server

## Member repositories
- stacks/stacks-project (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:22.159574+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 2026-08-30T07:01:10.131865+00:00, confidence not recorded.
  - readme: https://github.com/stacks/stacks-project (fetched 2026-08-28T04:03:22.159574+00:00, sha 8d42a1d61b46)
  - homepage: http://stacks.math.columbia.edu (fetched 2026-08-29T13:02:31.590592+00:00, sha 0d381ec88b6e)
  - site_page: https://stacks.math.columbia.edu/about (fetched 2026-08-29T13:02:31.593228+00:00, sha d988c45600a8)
- Data as of 2026-08-30T08:39:29.467469+00:00.