A nondegenerate interpolation continued fraction

Authors

  • Yu. Myslo Uzhhorod National University
  • M. Pahirya Uzhhorod National University

DOI:

https://doi.org/10.3842/umzh.v77i5.8698

Keywords:

ланцюговий дріб, невироджений інтерполяційний ланцюговий дріб, алгоритм побудови

Abstract

UDC 517.518:519.652

We prove that the Thiele's interpolation continued fraction has either \(2k-1\) approximants when the function is a polynomial of the \(k\)th degree or \(2k\) approximants for the function \(g(z) =a/(z-\alpha)^k.\) We specify the conditions under which the coefficients of the continued fraction are finite and different from zero. For a given set of values of the functions at the nodes, we propose an algorithm that either constructs a nondegenerate interpolation continued fraction or establishes the impossibility of this construction. We also present some examples.

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Published

23.07.2025

Issue

Section

Research articles

How to Cite

Myslo, Yu., and M. Pahirya. “A Nondegenerate Interpolation Continued Fraction”. Ukrains’kyi Matematychnyi Zhurnal, vol. 77, no. 5, July 2025, pp. 338–348, https://doi.org/10.3842/umzh.v77i5.8698.