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@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}
}

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

@misc{OAI:A-PD4-group-without-an-aspherical-manifold-model-September-24-2026,
  author = {{OpenAI}},
  title = {{A PD4 group without an aspherical manifold model}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/A-PD4-group-without-an-aspherical-manifold-model-September-24-2026/paper.pdf}{OAI:A-PD4-group-without-an-aspherical-manifold-model-September-24-2026}},
  year = {2026}
}