Original Articles

TIGHT EXTENSIONS AND Λ-CLASSES

Published in: Quaestiones Mathematicae
Volume 22 , issue 2 , 1999 , pages: 131–136

DOI: 10.1080/16073606.1999.9632066

Author(s): PatrickN. Stewart Department of Mathematics, Statistics and Computing Science, Canada

Keywords: 16N60

Abstract

Certain classes of associative rings are characterized as finite subdirect products of specialized prime rings. These characterizations depend on results about Λ-classes and tight extensions, concepts that were fist introduced by Olson, Le Row and Hey man.

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