Displaying similar documents to “ s -weakly regular group rings”

Exchange rings with stable range one

Huanyin Chen (2007)

Czechoslovak Mathematical Journal

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We characterize exchange rings having stable range one. An exchange ring R has stable range one if and only if for any regular a R , there exist an e E ( R ) and a u U ( R ) such that a = e + u and a R e R = 0 if and only if for any regular a R , there exist e r . a n n ( a + ) and u U ( R ) such that a = e + u if and only if for any a , b R , R / a R R / b R a R b R .