2024 ICML2024 Case-Based or Rule-Based: How Do Transformers Do the Math? Yi Hu, Xiaojuan Tang, Haotong Yang, and Muhan Zhang 2024 Paper Code Poster preprint Number Cookbook: Number Understanding of Language Models and How to Improve It Haotong Yang, Yi Hu, Shijia Kang, Zhouchen Lin, and Muhan Zhang 2024 Paper Code 2023 preprint Code Prompting: a Neural Symbolic Method for Complex Reasoning in Large Language Models Yi Hu, Haotong Yang, Zhouchen Lin, and Muhan Zhang 2023 Paper