Chokalau R. P.
In this paper the submodules $N$ of module $M$ are investigated which have the following property: there exists a cohereditary radical $r$ in the category of left $R$-modules with $r(M) = N$. They are described by the equality
$(N:M)M =N$. Some remarcable properties of submodules of this type are being proved such as: tranzitivity, sum and other.
Institutul de Matematică Academia de Ştiinţe a Moldovei
str. Academiei 5, MD-2028 Chişinău, Moldova