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Diagonal recursive formula on orthogonal Hermite-Padé table. (Chinese. English summary) Zbl 1424.41010

Summary: The product formula of any two polynomials in an orthogonal polynomial sequence is first established. Under the condition of regularity, the orthogonal Hermite-Padé (H-P) form sequences are recursively constructed along the diagonal in the \(s\)-dimensional orthogonal H-P table. This solves the calculation problem of orthogonal H-P table. The corresponding remainder estimation formula is given.

MSC:

41A10 Approximation by polynomials
41A21 Padé approximation
42C05 Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis
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