Group Representation Theory has many uses in Physics and Chemistry, representations of the symmetric group being the most widely used. This book introduces Group Representation Theory and discusses various methods in which to calculate representations. The first chapter introduces the subject creating a basis in general terms. The remainder of the book will focus mostly on the symmetric group. The second chapter derives a method to calculate representations of the symmetric group called Young's natural representation which utilizes the fact that there is a one-to-one correspondence between...