Semisimple Lie algebras Independently authored RT-LIE lesson expression and original figures: CC0 1.0 Universal. https://creativecommons.org/publicdomain/zero/1.0/ AI contributions: GPT-6.1 Sol (OpenAI), Codex, Ultra, October 2026; GPT-6 Astra (OpenAI), Codex, Ultra, for the opening foundations and integration described in PROVENANCE.json. AI self-checks do not constitute independent human review. The offline bundle additionally contains linked programme adaptations and selected human source components. Jim Hefferon components retain their recorded CC-BY-SA-2.5 terms and complete supplied notices and acknowledgements; the John M. Erdman finite-Hermitian-spaces component retains its recorded CC-BY-SA-4.0 terms. See human/linear-algebra-bridges/source-records.json and human/determinants/source-records.json at the archive root. These component terms are not relicensed by the RT-LIE CC0 dedication. The unchanged AG-CA Nullstellensatz/Jacobson lesson, including its fundamental-theorem-of-algebra proof, retains its source credits and independent CC0-1.0 dedication. Its course attribution and terms are at https://kokunoyumeto.github.io/open-math-courses/courses/AG-CA/licence.html. Referenced works and MathJax/other reader components retain their own terms and notices.