Representation of Polynomials by Linear Combinations of Radial Basis Functions

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Abstract

Let Pnd denote the space of polynomials on ℝd of total degree n. In this work, we introduce the space of polynomials Q2nd such that Pnd ⊂ Q2nd ⊂ Pndand which satisfy the following statement: Let h be any fixed univariate even polynomial of degree n and A be a finite set in ℝd. Then every polynomial P from the space Q2nd may be represented by a linear combination of radial basis functions of the form h(∥x+a∥), a ∈ A, if and only if the set A is a uniqueness set for the space Q2nd. © 2013 The Author(s).

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Maiorov, V. E. (2013). Representation of Polynomials by Linear Combinations of Radial Basis Functions. Constructive Approximation, 37(2), 283–293. https://doi.org/10.1007/s00365-013-9183-5

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