Polynomial extensions of Baer and quasi-Baer rings
A ring \(R\) is called (quasi-)Baer ring if the right annihilator of every (ideal) non-empty subset of \(R\) is generated, as a right ideal, by an idempotent of \(R\). Theorem 1.2. Let \(R\) be a quasi-Baer ring. Then the following extension rings are quasi-Baer rings, where \(X\) is an arbitrary nonempty set of not necessarily commuting indeterminates
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