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@misc{scheiderer2025,
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}

@misc{parent,
  author = {{OpenAI}},
  title = {{A nonspectrahedral hyperbolicity cone}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/A-Nonspectrahedral-Hyperbolicity-Cone-September-24-2026/nonspectrahedral-hyperbolicity-cone.pdf}{OAI:A-Nonspectrahedral-Hyperbolicity-Cone-September-24-2026}},
  year = {2026}
}