The importance of cohomology theory in the study of symplectic and Hamiltonian torus actions has been recognized for a long time. Its usefulness in the field continues today, specifically in the theory of toric varieties. One of the major aims of this book is to illustrate the cohomological methods used in the study of symplectic and Hamiltonian torus actions and to present some recent results. The second purpose of this book is to present the theory of toric manifolds, which is a study of toric varieties from a topological viewpoint, and to illustrate some applications to combinatorics Most of the techniques and proofs are either new and have not appeared elsewhere or are written in a style that is more accessible to readers. The volume is suitable for graduate students in mathematics having some basic knowledge in algebraic and differential topology. A publication of Hindustan Book Agency; distributed within the Americas by the American Mathematical Society. Maximum discount of 20% for all commercial channels. Readership Graduate students and research mathematicians interested in algebra, algebraic geometry, geometry, and topology. Table of Contents  Localization theorem and symplectic torus actions
 Toric varieties
 Torus actions on manifolds
 Bibliography
 Index
