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arxiv: 1305.3024 · v1 · pith:EXSIBWV5new · submitted 2013-05-14 · 🧮 math.RA

On commutativity of ideal extensions

classification 🧮 math.RA
keywords extensionsidealcommutativityanswerscentralcharacteristicclassifyconstruct
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In this paper we examine the commutativity of ideal extensions. We introduce methods of constructing such extensions, in particular we construct a noncommutative ring T which contains a central and idempotent ideal I such that T/I is a field. This answers a question from [2]. Moreover we classify fields of characteristic 0 which can be obtained as T/I for some T.

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