# [A C¹ Counterexample to the Entropy Conjecture](article.pdf)

OpenAI  
September 25, 2026

## Citation

```bibtex
@misc{OAI:A-C1-Counterexample-to-the-Entropy-Conjecture-September-25-2026,
  author = {{OpenAI}},
  title = {{A $C^1$ Counterexample to the Entropy Conjecture}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/A-C1-Counterexample-to-the-Entropy-Conjecture-September-25-2026/article.pdf}{OAI:A-C1-Counterexample-to-the-Entropy-Conjecture-September-25-2026}},
  year = {2026}
}
```