TY - BOOK AU - Victor G. Kac TI - Infinite dimensional lie algebras T2 - Progress in Mathematics SN - 9781475713848 AV - QA252.3 PY - 1983///] CY - New York PB - Springer KW - Mathematics N1 - 1. The invariant bilinear form and the generalized Casimir operator 2. Integrable representations and the Weyl group of a Kac-Moody algebra 3. Some properties of generalized Cartan matrices 4. Real and imaginary roots 5. Affine Lie algebras: the normalized invariant bilinear form, the root system and the Weyl group 6. Affine Lie algebras: the realization (case k=1) 7. Affine Lie algebras: the realization (case k=2 or 3). Application to the classification of finite order automorphisms 8. Highest weight modules over the Lie algebra g(A) 9. Integrable highest weight modules: the character formula 10. Integrable highest weight modules: the weight system, the contravariant Hermitian form and the restriction problem 11. Integrable highest weight modules over affine Lie algebras. Application to η-function identities 12. Affine Lie algebras, theta functions and modular forms 13. The principal realization of the basic representation. Application to the KdV-type hierarchies of non-linear partial differential equations ER -