@article{2structureoriginatedreasoningdataimprove,
  title = {$π^2$: Structure-Originated Reasoning Data Improves Long-Context Reasoning Ability of Large Language Models},
  author = {Quyet V. Do and Thinh Pham and Nguyen Nguyen and Sha Li and Pratibha Zunjare and Tu Vu},
  year = {2026},
  eprint = {2604.05114},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.05114},
}