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@misc{OAI:Elementary-Positivity-of-Chromatic-Quasisymmetric-Functions-September-24-2026,
  author = {{OpenAI}},
  title = {{Elementary positivity of chromatic quasisymmetric functions}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/Elementary-Positivity-of-Chromatic-Quasisymmetric-Functions-September-24-2026/paper.pdf}{OAI:Elementary-Positivity-of-Chromatic-Quasisymmetric-Functions-September-24-2026}},
  year = {2026}
}