How this content was made
The tutorials, proofs, definitions and formula quizzes on this site were assembled and generated with the help of AI language models — principally Claude Sonnet and Claude Opus from Anthropic, and, in the early stages of the site’s development, Google’s Gemini. I directed the work, chose the topics and their order, and reviewed the results, but the explanations, worked examples, proofs and diagrams themselves were largely written by those models.
Please read with care
AI-generated mathematics can contain errors — anything from a small typo in a formula or a mislabelled diagram to a gap or flaw in a proof. I have checked much of this material and corrected many problems along the way, but I cannot guarantee that every statement, step or example is correct.
Please do not treat this site as a fully verified or authoritative reference. If something matters to you — for coursework, examinations, teaching, research or professional work — confirm it against a textbook, your instructor or another trusted source.
Why this site exists
I built this site mainly for myself, as a personal resource for learning and reviewing mathematics, from the foundations up to full proofs. It is public in case others find it useful too, but it is a study notebook, not a published course.
Get in touch
Your feedback helps make the site better for everyone.
- Found an error? Report a correction — please include the page address and the step or section where the problem is.
- Want a topic covered? Request new content — I can’t promise to add everything, but I read every suggestion.