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2 votes

Legendre Polynomial Integral

The integral can be evaluate from the formula which express the product of two Legendre polynomials as a sum of Legendre polynomials (proved by F. Neumann and J.C. Adams, 1878), see e.g. the paper of …
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Bounds on Legendre polynomials on the complex plane

Setting $Q_{n}(z)=(n+1/2)^{1/2}P_{n}(z)$ for the orthonormalized Legendre polynomial, and $$\kappa_{n}(z)=\sum_{j=0}^{n}|Q_{j}(z)|^{2},$$ for the inverse of the Christoffel function, it is known that …
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10 votes

Recurrence of Legendre polynomial roots/ quadrature points

It is a conjecture of Stieltjes, apparently still open, see T.J. Stieltjes, Letter No. 275 of Oct. 2, 1890, in Correspondance d'Hermite et de Stieltjes, vol 2, Gauthier-Villars, Paris, 1905. that Le …
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