@article{theillusionofreasoningexposingevasivedat,
  title = {The Illusion of Reasoning: Exposing Evasive Data Contamination in LLMs via Zero-CoT Truncation},
  author = {Yifan Lan and Yuanpu Cao and Hanyu Wang and Lu Lin and Jinghui Chen},
  year = {2026},
  eprint = {2605.21856},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.21856},
}