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math.QA2005
The dynamical U(n) quantum group
Erik Koelink, Yvette van Norden
We study the dynamical analogue of the matrix algebra M(n), constructed from a dynamical R-matrix given by Etingof and Varchenko. A left and a right corepresentation of this algebr…
math.CA2005
Self-adjoint difference operators and classical solutions to the Stieltjes--Wigert moment problem
Jacob S. Christiansen, Erik Koelink
The Stieltjes-Wigert polynomials, which correspond to an indeterminate moment problem on the positive half-line, are eigenfunctions of a second order q-difference operator. We cons…