books.google.co.uk - More than half a century has passed since Weyl's "The Classical Groups" gave a unified picture of invariant theory that has retained its importance in mathematics and physics to the present day. This book presents an updated version of this theory together with many of the important recent developments....http://books.google.co.uk/books/about/Representations_and_invariants_of_the_cl.html?id=KBFoV2jpnPUC&utm_source=gb-gplus-shareRepresentations and invariants of the classical groups