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- W2587901588 abstract "We identify a class of remarkable algebraic relations satisfied by the zeros of the Krall orthogonal polynomials that are eigenfunctions of linear differential operators of order higher than two. Given an orthogonal polynomial family {p_n(x)}, we relate the zeros of the polynomial p_N with the zeros of p_m for each m <= N (the case m=N corresponding to the relations that involve the zeros of p_N only). These identities are obtained by exacting the similarity transformation that relates the spectral and the (interpolatory) pseudospectral matrix representations of linear differential operators, while using the zeros of the polynomial p_N as the interpolation nodes. The proposed framework generalizes known properties of classical orthogonal polynomials to the case of nonclassical polynomial families of Krall type. We illustrate the general result by proving new remarkable identities satisfied by the Krall-Legendre, the Krall-Laguerre and the Krall-Jacobi orthogonal polynomials." @default.
- W2587901588 created "2017-02-24" @default.
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- W2587901588 date "2016-08-12" @default.
- W2587901588 modified "2023-09-27" @default.
- W2587901588 title "New Properties of the Zeros of Krall Polynomials" @default.
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