Mathematical Preliminaries.- Conformal Transformations and Conformal
Killing Fields.- The Conformal Group.- Central Extensions of Groups.-
Central Extensions of Lie Algebras and Bargmann's Theorem.- The Virasoro
Algebra.- First Steps Toward Conformal Field Theory.- Representation
Theory of the Virasoro Algebra.- String Theory as a Conformal Field
Theory.- Axioms of Relativistic Quantum Field Theory.- Foundations of
Two-Dimensional Conformal Quantum Field Theory.- Vertex Algebras.-
Mathematical Aspects of the Verlinde Formula.- Appendix A.