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arXiv 1502.07256math.CA
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二元正交多项式类

Classes of Bivariate Orthogonal Polynomials

Mourad E. H. Ismail, Ruiming Zhang

摘要:

引入了一类二元正交多项式,它推广了圆盘多项式和2- $D$ Hermite多项式.我们确定某些有趣的成员,这一类包括一个变量的推广的2- $D$厄米多项式和两个变量的泽尼克或光盘多项式的扩展。我们也给出了所有这些扩展的$q$ -类似物。在每种情况下,除了生成函数和三项递归,我们提供提高和降低运营商,并表明多项式的特征函数的二阶偏微分或$q$ -差分算子。

英文摘要:

We introduce a class of orthogonal polynomials in two variables which generalizes the disc polynomials and the 2-$D$ Hermite polynomials. We identify certain interesting members of this class including a one variable generalization of the 2-$D$ Hermite polynomials and a two variable extension of the Zernike or disc polynomials. We also give $q$-analogues of all these extensions. In each case in addition to generating functions and three term recursions we provide raising and lowering operators and show that the polynomials are eigenfunctions of second-order partial differential or $q$-difference operators.

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