Interpolation | Polynomials

Lebesgue constant

In mathematics, the Lebesgue constants (depending on a set of nodes and of its size) give an idea of how good the interpolant of a function (at the given nodes) is in comparison with the best polynomial approximation of the function (the degree of the polynomials are fixed). The Lebesgue constant for polynomials of degree at most n and for the set of n + 1 nodes T is generally denoted by Λn(T ). These constants are named after Henri Lebesgue. (Wikipedia).

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From playlist Measure Theory

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From playlist Measure Theory

Related pages

Interpolation | Lebesgue's lemma | Henri Lebesgue | Chebyshev nodes | Polynomial | Uniform norm | Unisolvent point set | Interval (mathematics) | Operator norm | Mathematics | Function (mathematics) | Condition number | Triangle inequality | Exponential growth | Approximation | Lagrange polynomial | Padua points | Projection (linear algebra)