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- W1608698923 abstract "The results on Vandermonde-like matrices were introduced as a generalization of polynomial Vandermonde matrices, and the displacement structure of these matrices was used to derive an inversion formula. In this paper we first present a fast Gaussian elimination algorithm for the polynomial Vandermonde-like matrices. Later we use the said algorithm to derive fast inversion algorithms for quasiseparable, semiseparable and well-free Vandermonde-like matrices having $mathcal{O}(n^2)$ complexity. To do so we identify structures of displacement operators in terms of generators and the recurrence relations(2-term and 3-term) between the columns of the basis transformation matrices for quasiseparable, semiseparable and well-free polynomials. Finally we present an $mathcal{O}(n^2)$ algorithm to compute the inversion of quasiseparable Vandermonde-like matrices." @default.
- W1608698923 created "2016-06-24" @default.
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- W1608698923 date "2014-01-09" @default.
- W1608698923 modified "2023-09-27" @default.
- W1608698923 title "A Fast Algorithm for the Inversion of Quasiseparable Vandermonde-like Matrices" @default.
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