@article{ptolemysequantequatestoauniversaldynamic,
  title = {Ptolemy's Equant Equates to a Universal Dynamical Clock via Machine Learning},
  author = {Jingdong Zhang and Luan Yang and Murilo S. Baptista and Zefeng Zhang and Qunxi Zhu and Wei Lin and Celso Grebogi},
  year = {2026},
  eprint = {2607.15472},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.15472},
}