Representing by several orthogonal polynomials for sums of finite products of Chebyshev polynomials of the first kind and Lucas polynomials

Abstract

Abstract In this paper, we investigate sums of finite products of Chebyshev polynomials of the first kind and those of Lucas polynomials. We express each of them as linear combinations of Hermite, extended Laguerre, Legendre, Gegenbauer, and Jacobi polynomials whose coefficients involve some terminating hypergeometric functions F11 ${}_{1}F_{1}$ and F12 ${}_{2}F_{1}$. These are obtained by means of explicit computations.

Keywords

• Lucas polynomials
• Chebyshev polynomials of the first kind
• Sums of finite products
• Orthogonal polynomials