Christoffel–Darboux formula

ID: christoffel-darboux-formula

The Christoffel–Darboux formula is a significant result in the theory of orthogonal polynomials. It provides a way to express sums of products of orthogonal polynomials in a concise form. Typically, the formula relates the orthogonal polynomials defined on a specific interval with respect to a weight function.

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