General Topology has experienced rapid growth during the past fifty years, and nowadays its language and concepts pervade much of modern day mathematics. This book is intended for a broad community of scholars and students working in mathematics and other areas who want to become acquainted quickly with the terminology and ideas of General Topology that may be relevant to their work. Thus the book provides a source where the specialist and nonspecialist alike can find short introductions to both the basic theory and the newest developments in General Topology.