# [A boundary-only obstruction to four-dimensional disk embedding](paper.pdf)

OpenAI · September 24, 2026

## Citation

To cite this manuscript:

```bibtex
@misc{OAI:A-boundary-only-obstruction-to-four-dimensional-disk-embedding-September-24-2026,
  author = {{OpenAI}},
  title = {{A boundary-only obstruction to four-dimensional disk embedding}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/A-boundary-only-obstruction-to-four-dimensional-disk-embedding-September-24-2026/paper.pdf}{OAI:A-boundary-only-obstruction-to-four-dimensional-disk-embedding-September-24-2026}},
  year = {2026}
}
```