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Hermite-Birkhoff interpolation in the nth roots of unity

Journal Article · · Trans. Am. Math. Soc.; (United States)
DOI:https://doi.org/10.2307/1998252· OSTI ID:6645633
Consider, as nodes for polynomial interpolation, the nth roots of unity. For a sufficiently smooth function f(z), we require a polynomial p(z) to interpolate f and certain of its derivatives at each node. It is shown that the so-called Polya conditions, which are necessary for unique interpolation, are in this setting also sufficient.
Research Organization:
Kent State Univ., OH
OSTI ID:
6645633
Journal Information:
Trans. Am. Math. Soc.; (United States), Journal Name: Trans. Am. Math. Soc.; (United States) Vol. 259:2; ISSN TAMTA
Country of Publication:
United States
Language:
English

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