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Daghestan Electronic Mathematical Reports, 2017, Issue 7, Pages 86–93
DOI: https://doi.org/10.31029/demr.7.10
(Mi demr41)
 

Recurrence formulas for Chebyshev polynomials orthonormal on uniform grid

M. S. Sultanakhmedov

Daghestan Scientific Centre of Russian Academy of Sciences, Makhachkala
References:
Abstract: We consider recurrence relations for the classical Chebyshev polynomials $\left\{ \tau_n^{\alpha, \beta}(x, N) \right\}_{n=0}^{N-1}$, forming a finite orthonormal system on a uniform grid $\Omega_N = \left\{ 0, 1, \ldots, N-1\right\}$ with weight $\mu_N^{\alpha,\beta}(x) = c \, \frac{\Gamma(x+\beta+1)\Gamma(N-x+\alpha)}{ \Gamma(x+1)\Gamma(N-x)}$, where $c = \frac{\Gamma(N)2^{\alpha+\beta+1}}{\Gamma(N+\alpha+\beta+1)}$, $\alpha,\beta>-1$. Special attention is paid to the most commonly used cases: $\alpha=\beta$; $\alpha=\beta=0$; $\alpha=\beta=\pm 1/2$ and several others. In the proof of recurrence formulas we substantially use the well-known properties of the considered Chebyshev polynomials such as the orthogonality property, difference properties and the connection with the generalized hypergeometric function.
Keywords: Chebychev polynomials; recurrence formulas; polynomials orthogonal on grids; uniform grid; function approximation.
Received: 23.01.2017
Revised: 31.01.2017
Accepted: 03.02.2017
Bibliographic databases:
Document Type: Article
UDC: 517.538
Language: Russian
Citation: M. S. Sultanakhmedov, “Recurrence formulas for Chebyshev polynomials orthonormal on uniform grid”, Daghestan Electronic Mathematical Reports, 2017, no. 7, 86–93
Citation in format AMSBIB
\Bibitem{Sul17}
\by M.~S.~Sultanakhmedov
\paper Recurrence formulas for Chebyshev polynomials orthonormal on uniform grid
\jour Daghestan Electronic Mathematical Reports
\yr 2017
\issue 7
\pages 86--93
\mathnet{http://mi.mathnet.ru/demr41}
\crossref{https://doi.org/10.31029/demr.7.10}
\elib{https://elibrary.ru/item.asp?id=35033753}
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