CogFlow: Bridging Perception and Reasoning through Knowledge Internalization for Visual Mathematical Problem Solving - Chen, Shuhang; Xu, Yunqiu; Xie, Junjie; Lu, Aojun; Feng, Tao; HUANG, ZEYING; NING, ZHANG; Sun, Yi; Yang, Yi; Yuan, Hangjie (International Conference on Learning Representations, 2026)