IMO Problems, Theorems, and Methods (In 4 Volumes)

The problems in the International Mathematical Olympiad (IMO) are not only novel and interesting but also deeply rooted in profound mathematical context. The team at the International Mathematical Olympiad Research Center at East China Normal University has compiled and studied problems from past IMOs, dividing them into four volumes based on the mathematical fields involved: algebra, geometry, number theory, and combinatorics. These volumes are collectively titled "IMO Problems, Theorems, and Methods".

Jinhua Chen is a doctoral candidate in Mathematical Education at East China Normal University, with research interests in mathematics competitions and gifted education. He serves as an external mentor for mathematics competition courses at several high schools. Chen attended the Affiliated High School of South China Normal University and Guangdong Olympic School during his secondary education. He has excelled in various competitions, including the Chinese High School Mathematics League, the American Mathematics Competition 12, the Chinese College Mathematics Competition, and the COMAP Mathematical/Interdisciplinary Contest in Modeling.

Bin Xiong is a professor and doctoral supervisor at the School of Mathematical Sciences, East China Normal University, director of the Shanghai Key Laboratory of Core Mathematics and Practice, and director of the International Mathematical Olympiad Research Center. He is an expert with special allowance from the State Council, awarded the Shanghai May Day Labor Medal, and recognized as a model teacher and educator in Shanghai. More than 100 papers have been published both domestically and internationally, and over 150 books have been edited and co-authored. He served as the leader and head coach of the Chinese team at the International Mathematical Olympiad more than 10 times and received the Paul Erdos Award for International Mathematics in 2018.

Tianqi Lin is a mathematics teacher at High School Affiliated to Fudan University, engaged in mathematics education research, and enjoys solving and creating problems in plane geometry. He has participated in the proposition work of the Chinese national training team for the International Mathematical Olympiad in 2019, 2018, and 2016, and have participated in the proposition work of various competitions multiple times. He is passionate about communication, and has published articles in publications such as "Intermediate Mathematics" to exchange ideas with readers on solving and proposing plane geometry problems.

Gengyu Zhang, graduated from School of Mathematical Sciences of Peking University as an undergraduate and Columbia University as a graduate. During high school he won two gold medals in Chinese Mathematical Olympiad (CMO). After graduation, he has always maintained his interest and passion in mathematical competitions, conducted research on formulating and solving mathematical problems, and participated in a wide range of mathematical education activities in primary and secondary schools.

Guangyu Xu is a PhD student from School of Mathematical Sciences, East China Normal University. He completed his undergraduate studies in Mathematics and Applied Mathematics from Tsinghua University. During his doctoral studies, his research focuses on mathematics education and mathematics competitions, with a particular emphasis on combinatorial mathematics. He won a silver medal during the 29th Chinese Mathematical Olympiad and has maintained a strong passion for mathematics competitions over the years. He has also participated in the proposition and grading work for various major mathematics competitions in China multiple times.