Source: wikibot/christoffel-darboux-formula
= Christoffel–Darboux formula
{wiki=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.