Geodesic
Endomorphism Rings of Quasi-Injective Modules
Canadian journal of mathematics, Tome 20 (1968) no. 1, pp. 895-903

Voir la notice de l'article provenant de la source Cambridge University Press

Y. Utumi (14 and 15) obtained some interesting results on self-injective rings. He showed that, if R is right self-injective, then so is R/J, where J is the Jacobson radical of R. Also, if R is right self-injective and regular, then R is left self-injective for any set of orthogonal idempotents is an essential extension of . This note extends these results to endomorphism rings of quasi-injective modules. 
Osofsky, B. L. Endomorphism Rings of Quasi-Injective Modules. Canadian journal of mathematics, Tome 20 (1968) no. 1, pp. 895-903. doi: 10.4153/CJM-1968-086-3
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