Xu Jiagu
Lecture Notes on Mathematical Olympiad Courses: For Senior Section Vol. 2 by Xu Jiagu is an advanced mathematics textbook designed for students preparing for Olympiad competitions. Based on Singapore’s Olympiad training courses, it covers key topics such as number theory, inequalities, counting, and functional equations. Each chapter includes clear explanations, worked examples, and two sets of practice problems with detailed solutions. The book emphasizes problem-solving over lengthy theory, making it ideal for self-study or coaching use. It provides a structured and challenging approach to mastering Olympiad-level mathematics at the senior secondary level.