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arXiv 0812.0730math.CA
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不同序列拉盖尔多项式线性组合的零点

Zeros of linear combinations of Laguerre polynomials from different sequences

K Driver, K Jordaan

摘要:

研究了两类不同参数的拉盖尔多项式线性组合的零点的交错性质,即$R_n=L_n^α+aL_{n}^{α'}$和$S_n=L_n^α+bL_{n-1}^{α'}$ .在$R_n$和$S_n$的零分别与$L_k^α$、$L_k^{α'}$、$k=n$或$n-1$的零交错(或一般不交错)的情况下,给出了证明和数值反例。我们的结果证明持有连续的,以及积分,移位的参数$α$。

英文摘要:

We study interlacing properties of the zeros of two types of linear combinations of Laguerre polynomials with different parameters, namely $R_n=L_n^α+aL_{n}^{α'}$ and $S_n=L_n^α+bL_{n-1}^{α'}$. Proofs and numerical counterexamples are given in situations where the zeros of $R_n$, and $S_n$, respectively, interlace (or do not in general) with the zeros of $L_k^α$, $L_k^{α'}$, $k=n$ or $n-1$. The results we prove hold for continuous, as well as integral, shifts of the parameter $α$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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