Many authors have investigated the behavior of strong cleanness under certain ring extensions. In this note, we investigate the classical problem of lifting idempotents, in order to consolidate and extend these results. Our main result is that if R is a ring which is complete with respect to an ideal I and if x is an element of R whose image in R/I is strongly pi-regular, then x is strongly clean in R. This generalizes Theorem 2.1 of Chen and Zhou (2007) [9]. (C) 2013 Published by Elsevier B.V.
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Univ Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, SerbiaUniv Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, Serbia
Kostic, Aleksandra
Petrovic, Zoran Z.
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Univ Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, SerbiaUniv Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, Serbia
Petrovic, Zoran Z.
Pucanovic, Zoran S.
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Univ Belgrade, Fac Civil Engn, Bulevar Kralja Aleksandra 73, YU-11000 Belgrade, SerbiaUniv Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, Serbia
Pucanovic, Zoran S.
Roslavcev, Maja
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Univ Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, SerbiaUniv Belgrade, Fac Math, Studentski Trg 16, YU-11000 Belgrade, Serbia
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Harbin Inst Technol, Dept Math, Harbin 150001, Peoples R China
Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, CanadaHarbin Inst Technol, Dept Math, Harbin 150001, Peoples R China
Li, Chunna
Zhou, Yiqiang
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Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, CanadaHarbin Inst Technol, Dept Math, Harbin 150001, Peoples R China
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Shandong Inst Business & Technol, Math & Informat & Informat Sci Sch, Yantai 264005, Peoples R ChinaShandong Inst Business & Technol, Math & Informat & Informat Sci Sch, Yantai 264005, Peoples R China