Wang, Xi, Quan Shi, Zenghui Ding, Jianqing Gao, and Xianjun Yang. 2026. “Hallucination As a Computational Boundary: A Hierarchy of Inevitability and the Oracle Escape”. Proceedings of the AAAI Conference on Artificial Intelligence 40 (40):33675-82. https://doi.org/10.1609/aaai.v40i40.40657.