On the convergence of multidimensional regular C-fractions with independent variables

R.I. Dmytryshyn

doi:10.15421/241803

On the convergence of multidimensional regular C-fractions with independent variables

R.I. Dmytryshyn (Vasyl Stefanyk Precarpathian National University), https://orcid.org/0000-0003-2845-0137

Abstract

In this paper, we investigate the convergence of multidimensional regular С-fractions with independent variables, which are a multidimensional generalization of regular С-fractions. These branched continued fractions are an efficient tool for the approximation of multivariable functions, which are represented by formal multiple power series. We have shown that the intersection of the interior of the parabola and the open disk is the domain of convergence of a multidimensional regular С-fraction with independent variables. And, in addition, we have shown that the interior of the parabola is the domain of convergence of a branched continued fraction, which is reciprocal to the multidimensional regular С-fraction with independent variables.

Keywords

convergence; uniform convergence; multidimensional regular C-fraction with independent variables

MSC 2020

40A15; 30B70

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References

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