Ismail M. Idris (2003)
Czechoslovak Mathematical Journal
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The concept of a Prüfer ring is studied in the case of rings with involution such that it coincides with the corresponding notion in the case of commutative rings.
Walter Streb (1988)
Rendiconti del Seminario Matematico della Università di Padova
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Artemovych, O.D. (2002)
Mathematica Pannonica
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Konstantin Igorevich Beidar (1982)
Czechoslovak Mathematical Journal
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Kenneth A. Brown (1978)
Compositio Mathematica
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Kwak, Tai Keun (2006)
International Journal of Mathematics and Mathematical Sciences
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Fechete, I. (2001)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
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Andruszkiewicz, R. (2004)
Serdica Mathematical Journal
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2000 Mathematics Subject Classification: 16N80, 16S70, 16D25, 13G05. We construct some new examples showing that Heyman and Roos construction of the essential closure in the class of associative rings can terminate at any finite or the first infinite ordinal.