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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb. (N.S.), 1969 Volume 80(122), Number 2(10), Pages 266–280 (Mi sm3617)

This article is cited in 1 paper

A function algebra of the second degree on non-localness

A. D. Varshavskii


Abstract: Let $A$ be a function algebra with uniform convergence containing the constants, and let $\mathfrak M_A$ be its maximal ideal space. A continuous function $f$ on $\mathfrak M_A$ is called $f$-local if it coincides, in a neighborhood of each point $m\in\mathfrak M_A$, with some function from the algebra $A$. The algebra $A$ is called local if it contains all $A$-local functions, and nonlocal otherwise. A well-known example of a nonlocal algebra has been constructed by E. Kallin. She also raised the question: is there a smallest local closed subalgebra in $C(\mathfrak M_A)$ containing all the $A$-local functions?
In this work we give a negative answer to this question. The appropriate algebra is realized as a subalgebra in $C(S)$, where $S$ is a compactum in $C^5$, and is generated by acertain family of rational functions.
Bibliography: 5 titles.

UDC: 519.56

MSC: 46J10, 46J30, 46E30, 46A55, 32C15

Received: 03.12.1968


 English version:
Mathematics of the USSR-Sbornik, 1969, 9:2, 253–266

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