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On determinant expansions of Hankel operators

open access: yes, 2019
Let $w$ be a semiclassical weight which is generic in Magnus's sense, and $(p_n)_{n=0}^\infty$ the corresponding sequence of orthogonal polynomials. The paper expresses the Christoffel--Darboux kernel as a sum of products of Hankel integral operators.
Blower, Gordon, Chen, Yang
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