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Properties of Multivariate Homogeneous Orthogonal Polynomials

✍ Scribed by Brahim Benouahmane; Annie Cuyt


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
165 KB
Volume
113
Category
Article
ISSN
0021-9045

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✦ Synopsis


It is well-known that the denominators of Pade approximants can be considered as orthogonal polynomials with respect to a linear functional. This is usually shown by defining Pade -type approximants from so-called generating polynomials and then improving the order of approximation by imposing orthogonality conditions on the generating polynomials.

In the multivariate case, a similar construction is possible when dealing with the multivariate homogeneous Pade approximants introduced by the second author. Moreover it is shown here, that several well-known properties of the zeroes of classical univariate orthogonal polynomials, in the case of a definite linear functional, generalize to the multivariate homogeneous case. For the multivariate homogeneous orthogonal polynomials, the absence of common zeroes is translated to the absence of common factors.


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