On a Lebesgue constant of interpolation rational process at the Chebyshev – Markov nodes

In the present paper estimate of a Lebesgue constant of the interpolation rational Lagrange process on the segment [−1 ,1]  at the Chebyshev – Markov cosine fractions nodes is considered. It is shown that in the case of two real geometrically distinct poles of approximating functions, the norms of t...

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Bibliographic Details
Main Authors: Yauheni A. Rouba, Kanstantin A. Smatrytski, Yauheni V. Dirvuk
Format: Article
Language:Belarusian
Published: Belarusian State University 2019-01-01
Series: Журнал Белорусского государственного университета: Математика, информатика
Subjects:
Online Access:https://journals.bsu.by/index.php/mathematics/article/view/1008