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An Answer to a Question of Kegel on Sums of Rings
Published online by Cambridge University Press: 20 November 2018
Abstract
We construct a ring $R$ which is a sum of two subrings $A$ and $B$ such that the Levitzki radical of $R$ does not contain any of the hyperannihilators of $A$ and $B$. This answers an open question asked by Kegel in 1964.
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- Research Article
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- Copyright © Canadian Mathematical Society 1998
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