Formula:KLS:14.10:83

From DRMF
Jump to navigation Jump to search


lim q 1 C 2 m ( x ; - q \la | - q ) = C m 1 2 ( \la + 1 ) ( 2 x 2 - 1 ) + C m - 1 1 2 ( \la + 1 ) ( 2 x 2 - 1 ) subscript 𝑞 1 continuous-q-ultraspherical-Rogers-polynomial 2 𝑚 𝑥 superscript 𝑞 \la 𝑞 ultraspherical-Gegenbauer-polynomial 1 2 \la 1 𝑚 2 superscript 𝑥 2 1 ultraspherical-Gegenbauer-polynomial 1 2 \la 1 𝑚 1 2 superscript 𝑥 2 1 {\displaystyle{\displaystyle{\displaystyle\lim_{q\uparrow 1}C_{2m}\!\left(x;-q% ^{\la}\,|\,-q\right)=C^{\frac{1}{2}(\la+1)}_{m}\left(2x^{2}-1\right)+C^{\frac{% 1}{2}(\la+1)}_{m-1}\left(2x^{2}-1\right)}}}

Proof

We ask users to provide proof(s), reference(s) to proof(s), or further clarification on the proof(s) in this space.

Symbols List

C n subscript 𝐶 𝑛 {\displaystyle{\displaystyle{\displaystyle C_{n}}}}  : continuous q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -ultraspherical/Rogers polynomial : http://dlmf.nist.gov/18.28#E13
C n μ subscript superscript 𝐶 𝜇 𝑛 {\displaystyle{\displaystyle{\displaystyle C^{\mu}_{n}}}}  : ultraspherical/Gegenbauer polynomial : http://dlmf.nist.gov/18.3#T1.t1.r5

Bibliography

Equation in Section 14.10 of KLS.

URL links

We ask users to provide relevant URL links in this space.