The five-volume Encyclopedia of Mathematics provides a comprehensive overview of modern mathematics, its terminology, and its applications through approximately 17,000 keyword entries. The covered fields range from classical topics such as geometry, number theory, and the history of mathematics to numerical mathematics, graph theory, actuarial mathematics, and optimization, as well as modern application areas like wavelets, coding theory, and neural networks. Special attention is given to the biographies of significant scientists from antiquity to the present. This acknowledges the fact that in mathematics, there is a wealth of procedures, methods, or theorems named after famous personalities, such as Abelian group, Pythagorean theorem, and Euclidean algorithm.