{"id":13993097,"url":"https://github.com/eric-wieser/lean-matrix-cookbook","last_synced_at":"2026-01-27T00:37:28.403Z","repository":{"id":138546937,"uuid":"419797173","full_name":"eric-wieser/lean-matrix-cookbook","owner":"eric-wieser","description":"The matrix cookbook, proved in the Lean theorem prover","archived":false,"fork":false,"pushed_at":"2025-09-16T10:25:13.000Z","size":198,"stargazers_count":117,"open_issues_count":8,"forks_count":17,"subscribers_count":7,"default_branch":"master","last_synced_at":"2025-09-16T12:43:34.975Z","etag":null,"topics":["formal-mathematics","lean","lean4","matrices"],"latest_commit_sha":null,"homepage":"","language":"Lean","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/eric-wieser.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2021-10-21T16:25:24.000Z","updated_at":"2025-09-16T10:25:17.000Z","dependencies_parsed_at":"2024-01-07T01:00:26.836Z","dependency_job_id":"3d1372e7-a27a-42f3-8425-764694595610","html_url":"https://github.com/eric-wieser/lean-matrix-cookbook","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/eric-wieser/lean-matrix-cookbook","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eric-wieser%2Flean-matrix-cookbook","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eric-wieser%2Flean-matrix-cookbook/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eric-wieser%2Flean-matrix-cookbook/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eric-wieser%2Flean-matrix-cookbook/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/eric-wieser","download_url":"https://codeload.github.com/eric-wieser/lean-matrix-cookbook/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eric-wieser%2Flean-matrix-cookbook/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28793887,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-26T21:49:50.245Z","status":"ssl_error","status_checked_at":"2026-01-26T21:48:29.455Z","response_time":59,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["formal-mathematics","lean","lean4","matrices"],"created_at":"2024-08-09T14:02:13.849Z","updated_at":"2026-01-27T00:37:28.389Z","avatar_url":"https://github.com/eric-wieser.png","language":"Lean","funding_links":[],"categories":["Lean","Samples"],"sub_categories":[],"readme":"### The Matrix Cookbook, using Lean's mathlib\n\n[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-908a85?logo=gitpod)](https://gitpod.io/#https://github.com/eric-wieser/lean-matrix-cookbook)\n\nThis repository aims to provide the lemmas in [The Matrix Cookbook](https://www.math.uwaterloo.ca/~hwolkowi/matrixcookbook.pdf) (November 15, 2012) as proofs in the Lean theorem prover.\n\nIdeally, every proof in this repository should be a reference to a single lemma in [Mathlib](https://github.com/leanprover-community/mathlib4/), the maths library for lean.\n\nThe progress bar below shows the state of this repository; green represents lemmas which are proven, yellow lemmas which are stated, red lemmas which are ready to be stated, and dark red for entire missing sections.\nClicking on the progress bar will take you to a version that links to each lemma.\n\n[![](https://eric-wieser.github.io/lean-matrix-cookbook/progress_bar.svg)](https://eric-wieser.github.io/lean-matrix-cookbook/progress_bar.svg)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feric-wieser%2Flean-matrix-cookbook","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Feric-wieser%2Flean-matrix-cookbook","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feric-wieser%2Flean-matrix-cookbook/lists"}