## Let x (*) n, k , k=1, 2, ..., [nÂ2], denote the k th positive zero in increasing order of the ultraspherical polynomial P (\*) n (x). We prove that the function [\*+(2n 2 +1)Â (4n+2)] 1Â2 x (\*) n, k increases as \* increases for \*> &1Â2. The proof is based on two integrals involved with the s
Monotonicity results on the zeros of generalized Laguerre polynomials
✍ Scribed by Árpád Elbert; Andrea Laforgia
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 241 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0021-9045
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📜 SIMILAR VOLUMES
The orthogonality of the generalized Laguerre polynomials, [L (:) n (x)] n 0 , is a well known fact when the parameter : is a real number but not a negative integer. In fact, for &1<:, they are orthogonal on the interval [0, + ) with respect to the weight function \(x)=x : e &x , and for :<&1, but n
Let C \* n , n=0, 1, ..., \*>&1Â2 be the ultraspherical (Gegenbauer) polynomials, orthogonal on (&1, 1) with respect to the weight (1&x 2 ) \*&1Â2 . Denote by `n, k (\*), k=1, ..., [nÂ2] the positive zeros of C \* n enumerated in decreasing order. The problem of finding the ``extremal'' function f f