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Special Principal Ideal Rings and Absolute Subretracts

Published online by Cambridge University Press:  20 November 2018

Eric Jespers*
Affiliation:
Memorial University of Newfoundland, St. John's, Newfoundland A1C 5S7
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Abstract

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A ring R is said to be an absolute subretract if for any ring S in the variety generated by R and for any ring monomorphism f from R into S, there exists a ring morphism g from S to R such that gf is the identity mapping. This concept, introduced by Gardner and Stewart, is a ring theoretic version of an injective notion in certain varieties investigated by Davey and Kovacs.

Also recall that a special principal ideal ring is a local principal ring with nonzero nilpotent maximal ideal. In this paper (finite) special principal ideal rings that are absolute subretracts are studied.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1991

References

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