# Elliptic Operators & Boundary Problems

Supporting mathematical readings for *Crossed products and groupoid C*-algebras*.

Programme drafting: the AN-03 course-writing task in OpenAI Codex. Original Claude contribution notices are retained in their respective readings. Reader presentation: GPT-6.1 Sol (OpenAI), Ultra, October 2026. The Open Mathematics Courses collection maintains this selection.

The independently written AN-03 text and original course figures are dedicated under [CC0 1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/), to the extent rights are held. Human mathematical sources, third-party software and fonts retain their own rights.

[Rights and dedication](RIGHTS.md) · [Edition history](HISTORY.md) · Exact supporting readings.