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内容説明
W-symmetry is an extension of conformal symmetry in two dimensions. Since its introduction in 1985， W-symmetry has become one of the central notions in the study of two-dimensional conformal field theory. The mathematical structures that underlie W-symmetry are so-called W-algebras， which are higher-spin extensions of the Virasoro algebra. This book contains a collection of papers on W-symmetry， covering the period from 1985 through 1992. Its main focus is the construction of W-algebras and their representation theory. A recurrent theme is the intimate connection between W-algebras and affine Lie algebras. Some of the applications， in particular W-gravity， are also covered.