
Nonnegative product linearization of the associated continuous \(q\)-ultraspherical polynomials is shown for all values \(-1< q<1\). This is obtained by applying new criteria for nonnegative product linearization of orthogonal polynomials.
nonnegative linearization, Basic orthogonal polynomials and functions (Askey-Wilson polynomials, etc.), Difference operators, \(q\)-ultrasperical polynomials
nonnegative linearization, Basic orthogonal polynomials and functions (Askey-Wilson polynomials, etc.), Difference operators, \(q\)-ultrasperical polynomials
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