… In this paper we show that every left perfect, left and right simple-injective ring is quasi-… on
self-injective rings. It is also shown that if R is left perfect and right simple-injective, then R is …

… (1):249–258] that, for a left perfect ring R with Jacobson radical if and only if R is right … rings,
right FP-injective rings and right simple-injective rings are extended to larger classes of rings. …

… Furthermore comma we prove that if R is a right perfect comma right simple hyphen inj
ective and left pseudo hyphen coherent ring comma then R is QF period Some known results …

… Furthermore, it is shown that every left perfect strongly right simple-injective ring is right self-…
left perfect right simple-injective rings are right self-injective. We also prove that a ring R is …

… above to perfect rings. Following Harada [4], we call a module LA M-simple-injective if for …
idempotent e in a left perfect ring A, we will show that eA^ is A-simple-injective if and only if …

… We extend their results from a right P-injective ring to a right PS-injective ring. If R is … It is
shown that being a right PS-injective ring is not a Morita invariant. A ring R is a right GP F ring [7] …

… ring need not be self-injective and a right IP-injective ring is … if R is left perfect, left GIN and
right simple-injective then R is … that a left perfect, left and right self-injective ring is a QF ring (…

… A ring R is called right simple injective (right simple J-injective) if for any homomorphism
from a right ideal (small right ideal) of R to RR with simple image can be extended from RR to …

… rings and right 2-simple injective rings to 2-simple J-injective rings, some properties of this
class of rings … which 2-simple J-injective rings are QF-rings are given, many of them extending …

… According to Harada 12 , a ring R is called right simple-injective if every R-homomorphism
from a right ideal of R into R with simple image is given by left multiplication by an element of …