From Abstract to Contextual: What LLMs Still Cannot Do in Mathematics - Cao, Bowen; Zhang, Dongdong; Li, Yixia; Liu, Junpeng; Huang, Shijue; Shi, Chufan; Lu, Hongyuan; Wu, Yaokang; Chen, Guanhua; Lam, Wai; Wei, Furu (International Conference on Learning Representations, 2026)