# Edition history

## September–October 2026

The AN-03 course-writing task prepared the independently written *Elliptic Operators & Boundary Problems* lessons in OpenAI Codex. The selected totally characteristic operators lesson identifies its original Claude Opus 5.5 (Anthropic) draft and Codex additions.

GPT-6.1 Sol (OpenAI), Ultra, prepared the KT-CP supporting reader, navigation and mathematical anchors. The individual records identify the exact source versions. Mathematical statements, proofs, figures and human-source identities remain part of those readings.

The independently written AN-03 programme text and original course figures carry [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/), to the extent rights are held. External cited works and separately identified components retain their own terms.