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Fundamentalnaya i Prikladnaya Matematika, 2001, Volume 7, Issue 4, Pages 1107–1121
(Mi fpm616)
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This article is cited in 4 scientific papers (total in 4 papers)
On the uniform dimension of skew polynomial rings in many variables
V. A. Mushrubab a Russian State University of Trade and Economics
b Moscow State Pedagogical University
Abstract:
Let $R$ be an associative ring, $X=\{x_i\colon\ i\in\Gamma\}$ be a nonempty set of variables, $F=\{f_i\colon\ i\in\Gamma\}$ be a family of injective ring endomorphisms of $R$ and $A(R,F)$ be the Cohn–Jordan extension. In this paper we prove that the left uniform dimension of the skew polynomial ring $R[X,F]$ is equal to the left uniform dimension of $A(R,F)$, provided that $Aa\ne0$ for all nonzero $a\in A$. Furthermore, we show that for semiprime rings the equality $\dim R=\dim R[X,F]$ does not hold in the general case. The following problem is still open. Does $\dim R=\dim R[x,f]$ hold if $R$ is a semiprime ring, $f$ is an injective ring endomorphism of $R$ and $\dim R<\infty$?
Received: 01.06.1997
Citation:
V. A. Mushrub, “On the uniform dimension of skew polynomial rings in many variables”, Fundam. Prikl. Mat., 7:4 (2001), 1107–1121
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https://www.mathnet.ru/eng/fpm616 https://www.mathnet.ru/eng/fpm/v7/i4/p1107
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Abstract page: | 269 | Full-text PDF : | 115 | First page: | 1 |
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