Abstract
We study here the regularity of certain Pál-type interpolation problems involving the mth roots of unity along with an additional point ζ and the nth roots of unity. We determine the largest domains for ζ which ensure the regularity of the problems.
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Communicated by C. Brezinsky
AMS subject classification
41A05
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de Bruin, M.G., Dikshit, H.P. Pál-type Birkhoff interpolation on nonuniformly distributed points. Numer Algor 40, 1–16 (2005). https://doi.org/10.1007/s11075-005-1516-4
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DOI: https://doi.org/10.1007/s11075-005-1516-4