Table of Contents: “...Lectures Operator Methods in String Theory -- On the Fixed Point Formula and the Rigidity Theorem of Witten -- Non-Commutative Geometry -- Statistics of Fields,the Yang Baxter Equation And the Theory of Knots and Links -- Topological Actions in Two...”

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Table of Contents: “... We Need Local Gauge Invariance in Theories with Vector Particles? An Introduction. (Lecture I) -- Which Topological Features of a Gauge Theory can be Responsible for Permanent Confinement? (Lecture II) -- Naturalness, Chiral Symmetry, and Spontaneous...”

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