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arXiv · 1409.3973

Extensions of square stable range one

Huanyin Chen·Marjan Sheibani
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Abstract

An ideal $I$ of a ring $R$ is square stable if $aR+bR=R$ with $a\in I$ and $b\in R$ implies that $a^2+by$ is invertible in $I$ for some $y\in I$. We prove that an exchange ideal $I$ of a ring $R$ is square stable if and only if for any $a\in I$, $a^2\ in J(R)$ implies that $a\in J(R)$, if and only if every regular element in $I$ is strongly regular.

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Huanyin Chen, Marjan Sheibani. 2014-09-13. Extensions of square stable range one. https://arxiv.org/abs/1409.3973

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