Strong asymptotics for the sequence of monic polynomials Q n (z), orthogonal with respect to the inner product with z outside of the support of the measure + 2 , is established under the additional assumption that + 1 and + 2 form a so-called coherent pair with compact support. Moreover, the asympt
Asymptotics of Sobolev orthogonal polynomials for symmetrically coherent pairs of measures with compact support
✍ Scribed by Francisco Marcellán; Andrei Martínez-Finkelshtein; Juan J. Moreno-Balcázar
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 656 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0377-0427
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✦ Synopsis
We study the strong asymptotics for the sequence of manic polynomials Q&c), orthogonal with respect to the inner product U-3 9)s = s f(xMx) h(x) + 1 s f'(x)s'(x> 44X), A> 0, with x outside of the support of the measure ~2. We assume that ~1 and ~2 are symmetric and compactly supported measures on lR satisfying a coherence condition. As a consequence, the asymptotic behaviour of (Q",Q")s and of the zeros of Qn is obtained.
📜 SIMILAR VOLUMES
Let {Sn}n denote a sequence of polynomials orthogonal with respect to the Sobolev inner product where ¿ 0 and {d 0; d 1} is a so-called coherent pair with at least one of the measures d 0 or d 1 a Jacobi measure. We investigate the asymptotic behaviour of Sn(x), for n → +∞ and x ÿxed, x ∈ C \ [ -1;