Uncovers conditions for d-orthogonality in q-Sheffer polynomials, suggesting relationships to known polynomial sets.
In this paper, we find necessary and sufficient conditions for q-Sheffer polynomials to be d-orthogonal. Moreover, an example is presented and with the help of this example, we rediscover some known d-orthogonal polynomial sets.
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Varma et al. (2026) studied this question.
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