# History

## Elliptic Operators & Boundary Problems — 2026 earlier draft

The AN-03 course-writing task produced the earlier 36-unit course draft. The AN-03 local course project acted as publisher.

## Elliptic Operators & Boundary Problems: Renewed 2026 Course Draft

The AN-03 course-writing task and OpenAI Codex rewrote and reorganized the 36 inherited units while preserving their mathematical objects, formulas, hypotheses, proofs and source identities. The renewed collection also adds further lessons. The AN-03 local course project remains the publisher.

External books, papers and software are cited as antecedents or comparison sources. They are not included as source payloads and retain their own rights.

## Elliptic boundary reduction — selected 2026 reading

OpenAI Codex prepared the boundary-reduction lesson with exact supporting readings for Open Mathematics Courses. The complete current supporting chapters retain their original statements, corrections and full proofs. The wave chapter is limited to the exact completed constant-coefficient and odd-wave branches supplying the geometric chapter; its other sections are outside this selection. Original author notices, theorem conditions, equations and proofs are retained in the selected scope.