An Orthogonality Property of the Legendre Polynomials
classification
🧮 math.CA
keywords
polynomialslegendreorthogonalitypropertyadditionalarcsinechristoffelclassical
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We give a remarkable additional orthogonality property of the classical Legendre polynomials on the real interval $[-1,1]$: polynomials up to degree $n$ from this family are mutually orthogonal under the arcsine measure weighted by the degree-$n$ normalized Christoffel function.
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