Lecture I: Combinatorics of orthogonal polynomials, I

Abstract

I will survey uses of classical orthogonal polynomials in association schemes and enumeration, including the exponential formula.
 

Lecture II: Combinatorics of orthogonal polynomials, II

Abstract

I will explain Viennot's combinatorial theory of general orthogonal polynomials in one variable, and give several examples and open problems involving q-series.
 
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