{"adoption": {"forks": 65, "observed_at": "2026-08-28T04:06:03.347953+00:00", "stars": 1995}, "canonical_url": "https://ross.abutalabs.com/products/linear-algebra", "card": {"archived": false, "artifact_type": "learning-resource", "description": "A concise, beginner-friendly introduction to the core ideas of linear algebra.", "domain": ["mathematics", "education", "tutorials"], "enriched": true, "function": ["documentation"], "health_score": 78, "homepage": "https://little-book-of.github.io/linear-algebra/", "language": "Jupyter Notebook", "license": "NOASSERTION", "license_family": "other", "maturity": "active", "member_repos": ["little-book-of/linear-algebra"], "name": "little-book-of/linear-algebra", "platform": ["python", "cross-platform"], "pushed_at": "2026-03-16T14:47:03+00:00", "repo": "little-book-of/linear-algebra", "stars": 1995, "tags": ["linear-algebra", "textbook", "quarto", "jupyter-notebook", "open-textbook", "beginner-friendly", "mathematics-education", "education", "web"], "topics": [], "urls": [], "use_cases": ["learn linear algebra from scratch", "find a free beginner linear algebra textbook", "study vectors and matrices with interactive Python notebooks", "get a linear algebra refresher before machine learning", "download a linear algebra book as PDF or EPUB", "read a linear algebra introduction in Spanish, Chinese, Japanese, or Korean"], "what_it_is": "An open-source, beginner-friendly book introducing the core ideas of linear algebra, built with Quarto and distributed as PDF, EPUB, LaTeX, and a multi-language website. It includes interactive Jupyter notebooks for hands-on learning with Python.", "when_to_avoid": ["you need a rigorous, proof-heavy graduate-level treatment", "you want a full university course with exercises and grading", "you need advanced topics like tensor algebra or functional analysis"], "when_to_choose": ["you want a concise, beginner-friendly introduction to linear algebra", "you prefer learning with runnable Jupyter/Colab notebooks", "you need a free, multi-format, multi-language math textbook"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/linear-algebra", "repo": "little-book-of/linear-algebra", "role": "main", "score": 55}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:03.347953+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T03:02:30.999999+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d4c88d41286ab0a7f1b601c6ff7bcfd62c99c40e4b405b091b5865f916d82fa6", "fetched_at": "2026-08-28T04:06:03.347953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/little-book-of/linear-algebra"}, {"content_hash": "67a387c753c6ac31bb44b14463daa5a40981580b1b53ee44354bc1f9659204a4", "fetched_at": "2026-08-29T10:42:11.600616+00:00", "kind": "homepage", "missing": false, "url": "https://little-book-of.github.io/linear-algebra/"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 72, "longevity": 26, "rhythm": 49}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 365, "days_push": 170, "days_rel": 341, "gap_med": 2, "n_releases_24m": 4}, "score": 55, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}