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This article is cited in 1 scientific paper (total in 1 paper)
On the possibility of division and involution to a fractional power in the algebra of rational functions
P. V. Paramonov
Abstract:
Suppose that a function $f(z)$ satisfies a Lipschitz condition with an arbitrary positive element on a compact set $X$ in $\mathbf C$ and can be uniformly approximated on $X$ by rational functions. If $q>1$ and some branch of $(f(z))^q$ is continuous on $X$, then this branch can also be approximated on $X$ by rational functions. Also, an example is given of a compact set $X$ and two functions $f(z)$ and $g(z)$ uniformly approximable on $X$ by rational functions and with ratio $g(z)/f(z)$ naturally (uniquely) defined and continuous on $X$ but not approximable by rational functions.
Bibliography: 7 titles.
Received: 20.02.1985
Citation:
P. V. Paramonov, “On the possibility of division and involution to a fractional power in the algebra of rational functions”, Izv. Akad. Nauk SSSR Ser. Mat., 51:2 (1987), 412–420; Math. USSR-Izv., 30:2 (1988), 385–393
Linking options:
https://www.mathnet.ru/eng/im1301https://doi.org/10.1070/IM1988v030n02ABEH001019 https://www.mathnet.ru/eng/im/v51/i2/p412
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Abstract page: | 1987 | Russian version PDF: | 169 | English version PDF: | 35 | References: | 70 | First page: | 2 |
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