Add the title of the book to the title of the math chapter. Because the title of a book is a symbol used to express the title of a book, an article, a newspaper, a file, an opera, a song, a picture, etc. The title of a book indicates the name of a book, document, newspaper, article, etc. , but also used in songs, movies, TV dramas and other literary and artistic works closely related to the written media. Therefore, you need to add the title of the book when typing chapters. The title of the chapter in the book belongs to the title of the article, so add the title.