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Clean classical rings of quotients of commutative rings, with applications to C(X)

机译:清洁交换环商的经典环,并将其应用于C(X)

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摘要

Commutative clean rings and related rings have received much recent attention. A ring R is clean if each r is an element of 2 R can be written r = u + e, where u is a unit and e an idempotent. This article deals mostly with the question: When is the classical ring of quotients of a commutative ring clean? After some general results, the article focuses on C(X) to characterize spaces X when Q(cl)( X) is clean. Such spaces include cozero complemented, strongly 0-dimensional and more spaces. Along the way, other extensions of rings are studied: directed limits and extensions by idempotents.
机译:可交换清洁环和相关环最近受到了广泛关注。如果每个r是2个R的元素,则环R是干净的,可以写成r = u + e,其中u是单位,e是幂等。本文主要讨论以下问题:交换环的商的经典环何时清洁?经过一些一般的结果后,本文重点讨论C(X)来表征Q(cl)(X)干净时的空间X。这样的空间包括cozero补码,强0维和更多空间。在此过程中,研究了环的其他扩展:有向数的有向极限和扩展。

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