Geodesic
Structure of Certain Periodic Rings
Canadian mathematical bulletin, Tome 28 (1985) no. 1, pp. 120-123

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Let R be a periodic ring, N the set of nilpotents, and D the set of right zero divisors of R. Suppose that (i) N is commutative, and (ii) every x in R can be uniquely written in the form x = e + a, where e 2 = e and a ∊ N. Then N is an ideal in R and R/N is a Boolean ring. If (i) is satisfied but (ii) is now assumed to hold merely for those elements x ∊ D, and if 1 ∊ R, then N is still an ideal in R and R/N is a subdirect sum of fields. It is further shown that if (i) is satisfied but (ii) is replaced by: "every right zero divisor is either nilpotent or idempotent," and if 1 ∊ R, then N is still an ideal in R and R/N is either a Boolean ring or a field.
DOI : 10.4153/CMB-1985-014-9
Mots-clés : 16A38, 16A70 
Abu-Khuzam, Hazar; Yaqub, Adil. Structure of Certain Periodic Rings. Canadian mathematical bulletin, Tome 28 (1985) no. 1, pp. 120-123. doi: 10.4153/CMB-1985-014-9
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