On the analytic extension of three ratios of Horn's confluent hypergeometric function $\mathrm{H}_7$

Autor: V. Hladun, R. Rusyn, M. Dmytryshyn
Jazyk: English<br />Ukrainian
Rok vydání: 2024
Předmět:
Zdroj: Researches in Mathematics, Vol 32, Iss 1, Pp 60-70 (2024)
Druh dokumentu: article
ISSN: 2664-4991
2664-5009
DOI: 10.15421/242405
Popis: In this paper, we consider the extension of the analytic functions of two variables by special families of functions — continued fractions. In particular, we establish new symmetric domains of the analytical continuation of three ratios of Horn's confluent hypergeometric function $\mathrm{H}_7$ with certain conditions on real and complex parameters using their continued fraction representations. We use Worpitzky's theorem, the multiple parabola theorem, and a technique that extends the convergence, already known for a small domain, to a larger domain to obtain domains of convergence of continued fractions, and the PC method to prove that they are also domains of analytical continuation.
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