Some new asymptotic properties for the zeros of Jacobi, Laguerre, and Hermite polynomials

Some new asymptotic properties for the zeros of Jacobi, Laguerre, and Hermite polynomials
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Jacobi、Laguerre 和 Hermite 多项式零点的一些新渐近性质

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发表时间:
1994
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通讯作者:
W. J. Studden
W. J. Studden
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作者:
H. Dette;W. J. Studden

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对于广义Jacobi、Laguerre和Hermite多项式, $$P_n^{left({alpha _n,eta _n } right)} left(x right),L_n^{left({alpha _n } right)} left(x right),H_n^{left({gamma _n } right)} left(x 八)$$ 当序列αn或βn以大于n的坦恩趋于无穷大时,得到了零点的极限分布.推导过程利用了相应递推公式中序列的特殊性质。这些结果被用来给出最大和最小零点的二阶近似,从而改进(和推广)了Moak,Saff和Varga [11]在一篇论文中的极限陈述。
AbstractFor the generalized Jacobi, Laguerre, and Hermite polynomials $$P_n^{left( {alpha _n ,eta _n } ight)} left( x ight),L_n^{left( {alpha _n } ight)} left( x ight),H_n^{left( {gamma _n } ight)} left( x ight)$$ , the limit distributions of the zeros are found, when the sequences αn or βn tend to infinity with a larger order thann. The derivation uses special properties of the sequences in the corresponding recurrence formulas. The results are used to give second-order approximations for the largest and smallest zero which improve (and generalize) the limit statements in a paper by Moak, Saff, and Varga [11].