Introduction to Lie Algebras and Representation Theory (Graduate Texts in Mathematics) (v. 9)
J.E. Humphreys Introduction to Lie Algebras and Representation Theory "An excellent introduction to the subject, ideal for a one semester graduate course."a "THE AMERICAN MATHEMATICAL MONTHLY "Exceptionally well written and ideally suited either for independent reading or as a text for an introduction to Lie algebras and their representations."a "MATHEMATICAL REVIEWS