平躺
发表于 2025-3-28 16:41:29
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意外的成功
发表于 2025-3-28 20:10:22
On Spaces of Piecewise Polynomials in Two Variables,The purpose of this paper is to survey the progress which has been made in the last several years in developing a theory for spaces of piecewise polynomials in two variables. The ultimate goal for this area would be to have a complete analog of the univariate theory, but as we shall see, much remains to be done.
foreign
发表于 2025-3-29 02:31:29
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Obvious
发表于 2025-3-29 06:43:02
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chassis
发表于 2025-3-29 09:00:22
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Directed
发表于 2025-3-29 13:01:55
B-Splines on the Circle and Trigonometric B-Splines,We shall first introduce the notion of circle splines. Denote by Π. the space of polynomials of degree at most n on the unit circle U = {z € (ℂ: |z| = 1}.
Transfusion
发表于 2025-3-29 16:37:08
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协奏曲
发表于 2025-3-29 23:17:15
Four Lectures on Multivariate Approximation,(many-variable) approximation. In either case, the central problem of best approximation can be stated thus: a Banach space X and a subspace Y of X are prescribed, and for a particular x ∈ X we seek a best approximation of x in Y.
Heart-Rate
发表于 2025-3-30 03:10:22
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cavity
发表于 2025-3-30 07:45:06
Birkhoff Interpolation on the Roots of Unity,, the general problem of Birkhoff interpolation on the roots of unity has not received enough attention. Even for a three row incidence matrix E we do not know any simple criterion for settling its regularity on the cube roots of unity.