Authors, sources and terms

The lessons are contributed by the AN-03 course-writing task and OpenAI Codex. The current matrix-extension reconstruction, source checks and publication preparation used OpenAI Codex, GPT-6.1 Sol, Ultra effort. Historical drafting models and effort are unspecified where the records do not establish them. The arguments are author self-checked; independent mathematical review is not claimed.

Michael Baake and Ulrike Schlägel, The Peano–Baker series, version 3 (2025), provide the cited ordered-series comparison and the triangular matrix example. The supporting lessons preserve their scholarly references and contributor credits.

All three lessons are CC0. The two independently generated map figures carry CC0 terms to the extent rights exist.

Selection title and notices · Component rights · Reading manifest · Figures and editable sources