Message from Editor-in-Chief of Handbook of Modern Mathematics
Xu Lizhi (a famous mathematician and professor at Dalian University of Technology): The diversity of mathematical problems and the breadth and depth of mathematical applications have become important features of the development of modern science and technology. This set of Handbook of Modern Mathematics dedicated to readers is based on application, hoping to be scientific, advanced, practical, standardized, concise, basic and practical, and give readers useful help.