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Commutative feebly clean rings

Nitin Arora

Department of Mathematics, Indian Institute of Technology, Delhi 110016, India

E-mail Address: nitinarora81@gmail.com

Corresponding author.

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and

S. Kundu

Department of Mathematics, Indian Institute of Technology, Delhi 110016, India

E-mail Address: skundu@maths.iitd.ac.in

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https://doi.org/10.1142/S0219498817501286Cited by:7 (Source: Crossref)

Abstract

A ring $R$ $R$ is defined to be feebly clean, if every element $x$ $x$ can be written as $x = u + e_{1} - e_{2}$ $x = u + e_{1} - e_{2}$ , where $u$ $u$ is a unit and $e_{1}$ $e_{1}$ , $e_{2}$ $e_{2}$ are orthogonal idempotents. Feebly clean rings generalize clean rings and are also a proper generalization of weakly clean rings. The family of all semiclean rings properly contains the family of all feebly clean rings. Further properties of feebly clean rings are studied, some of them analogous to those for clean rings. The feebly clean property is investigated for some rings of complex-valued continuous functions. Throughout, all rings are commutative with identity.

Communicated by T. Y. Lam

Dedicated to the memory of late Prof. Charles J. Parry

Keywords:

AMSC: 13A99, 13B30, 13B99, 16S60

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