ISBN-13: 9780821813966 / Angielski / Miękka / 1998
An expanded edition of Kac's original introduction to algebraic aspects of conformal field theory which was published by the AMS in 1996. This revised edition is based on courses given by the author at MIT and at Rome University in Spring 1997. New material is added, including the foundations of a rapidly growing area of algebraic conformal theory. Also, in some places, the exposition is significantly simplified.