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Some q-Krawtchouk polynomials on Chevalley groups. (English) Zbl 0448.33019

MSC:
33C45 Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.)
20G40 Linear algebraic groups over finite fields
05C25 Graphs and abstract algebra (groups, rings, fields, etc.)
20G05 Representation theory for linear algebraic groups
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