Formulas for the evaluation of all U(N) integrals are derived. Tables display the results for integrands involving up to six U’s and six U°’s. The complete pole structure of De Wit–’t Hooft anomalies is unveiled. The effects of 1/N2 corrections and De Wit–’t Hooft anomalies on two-dimensional U(N) lattice gauge theories in the strong coupling 1/N expansion is discussed.
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Stuart Samuel (1980) studied this question.
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