Unlocking the Power of Multi-Agent LLM for Reasoning: From Lazy Agents to Deliberation - Zhang, Zhiwei; Li, Xiaomin; Lin, Yudi; Liu, Hui; Chandradevan, Ramraj; Wu, Linlin; Lin, Minhua; Wang, Fali; Tang, Xianfeng; He, Qi; Wang, Suhang (International Conference on Learning Representations, 2026)