J-regular rings with injectivities

Details J-regular rings with injectivities J-regular rings with injectivities

2010-04-05

arxiv.org/abs/1004.0562v1

Mathematics

Rings and Algebras

7 pages

Scientific paper

A ring $R$ is called a J-regular ring if R/J(R) is von Neumann regular, where J(R) is the Jacobson radical of R. It is proved that if R is J-regular, then (i) R is right n-injective if and only if every homomorphism from an $n$-generated small right ideal of $R$ to $R_{R}$ can be extended to one from $R_{R}$ to $R_{R}$; (ii) R is right FP-injective if and only if R is right (J, R)-FP-injective. Some known results are improved.

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