Table of Contents: “... -- Finite W symmetry in finite dimensional integrable systems -- On the “Drinfeld-Sokolov” reduction of the Khizhnik-Zamolodchikov equation -- Noncritical dimensions for critical string theory: life beyond the Calabi-Yau frontier -- W? algebra in two-dimensional...”

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Table of Contents: “... Representation of SO(4,4) -- On E 10 -- Special Aspects of String Theory -- Operator Methods in String Theory -- On Strings and J.Douglas Variational Principle -- Groupoids and Lie Bigebras in Gauge and String Theories -- Conformal Invariance and Integrable Systems...”

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Table of Contents: “...Fundamental Problems of Gauge Field Theory: Introduction to the Problems -- Topics in String Theory -- Kac-Moody and Virasoro Algebras in Local Quantum Physics -- An Introduction to Anomalies -- Constructive Gauge Theory -- Particle Structure of Gauge...”

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