Published online by Cambridge University Press: 20 November 2018
If I is a right ideal of a ring R, I is said to be an annihilator right ideal provided that there is a subset S in R such that
I is said to be injective if it is injective as a submodule of the right regular R-module RR. The purpose of this note is to prove that a prime ring R (not necessarily with 1) which satisfies the ascending chain condition on annihilator right ideals is a simple ring with descending chain condition on one sided ideals if R contains a nonzero right ideal which is injective.