Let [h n (z)] be the sequence of polynomials, satisfying where \* n # [0, 2n], n # N. For a wide class of weights d\(x) and under the assumption lim n Γ \* n Γ(2n)=% # [0, 1], two descriptions of the zero asymptotics of [h n (z)] are obtained. Furthermore, their analogues for polynomials orthogonal
A note on asymptotic zero distribution of orthogonal polynomials
β Scribed by William F. Trench
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 163 KB
- Volume
- 375
- Category
- Article
- ISSN
- 0024-3795
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β¦ Synopsis
We strengthen a theorem of Kuijlaars and Serra Capizzano on the distribution of zeros of a sequence of orthogonal polynomials {p n } β n=1 for which the coefficients in the three term recurrence relation are clustered at finite points. The proof uses a matrix argument motivated by a theorem of Tyrtyshnikov.
π SIMILAR VOLUMES
We prove that the zeros of a certain family of Sobolev orthogonal polynomials involving the Freud weight function e -x 4 on R are real, simple, and interlace with the zeros of the Freud polynomials, i.e., those polynomials orthogonal with respect to the weight function e -x 4 . Some numerical examp