The<& lt Mathematics Dictionary is divided into two volumes, which contain all the contents of mathematics from low level to high level. The content is not beyond the scope of senior high school, but many methods and theorems are beyond the scope of senior high school mathematics teaching and are very applicable. The key is that the unique problem-solving method is also applicable in the college entrance examination. Nowadays, few people know this dictionary, and generally only people majoring in mathematics in universities know it. Xinhua Bookstore may not have it. You can find it in large libraries, and it is best to buy it. Lifelong benefit, please add more points.