# [A singular normal affine surface with free tangent sheaf](paper.pdf)

**Author:** OpenAI

**Date:** September 23, 2026

## Citation

```bibtex
@misc{OAI:A-singular-normal-affine-surface-with-free-tangent-sheaf-September-23-2026,
  author = {{OpenAI}},
  title = {{A singular normal affine surface with free tangent sheaf}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/A-singular-normal-affine-surface-with-free-tangent-sheaf-September-23-2026/paper.pdf}{OAI:A-singular-normal-affine-surface-with-free-tangent-sheaf-September-23-2026}},
  year = {2026}
}
```