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$\lambda$-Griffiths polynomials: Bispectrality and biorthogonality
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abstract
We introduce a generalization of bivariate Griffiths polynomials depending on an additional parameter $\lambda$. These $\lambda$-Griffiths polynomials are bivariate, bispectral and biorthogonal. For two specific values of the parameter $\lambda$, they become orthogonal. One of the value is related to the usual bivariate Griffiths polynomials, while the second value produces new orthogonal bivariate polynomials.
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Cited by 1 Pith paper
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Contiguity relations for finite families of orthogonal polynomials in the Askey scheme
The paper gives a complete classification of A2, B2, and B2-prime contiguity relations for the finite Askey scheme families, and proves all A2 relations are Christoffel or Geronimus transforms.
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