The field of vertex operator algebras is an active area of research and
plays an integral role in infinite-dimensional Lie theory, string
theory, and conformal field theory, and other subdisciplines of
mathematics and physics. This book begins with a careful presentation of
the theoretical foundations of vertex operator algebras and their
modules, and then proceeds to a range of applications. The text features
new, original results and a fresh perspective on the important works of
many researchers; in particular, it provides a detailed treatment of the
concept of a "representation'' of a vertex (operator) algebra. Requiring
only a familiarity with basic algebra, this broad, self-contained
treatment of the core topics in vertex algebras will appeal to graduate
students and researchers in both mathematics and physics.