نتایج جستجو برای: pure injective

تعداد نتایج: 97549  

Journal: :Studia Mathematica 1998

Journal: :Proceedings of the American Mathematical Society 1981

Journal: :Pacific Journal of Mathematics 1959

We introduce the class of “right almost V-rings” which is properly between the classes of right V-rings and right good rings. A ring R is called a right almost V-ring if every simple R-module is almost injective. It is proved that R is a right almost V-ring if and only if for every R-module M, any complement of every simple submodule of M is a direct summand. Moreover, R is a right almost V-rin...

Journal: :International Electronic Journal of Algebra 2021

Let $R$ be a ring, $n$ an non-negative integer and $d$ positive or $\infty$. A right $R$-module $M$ is called \emph{$(n,d)^*$-projective} if ${\rm Ext}^1_R(M, C)=0$ for every $n$-copresented $C$ of injective dimension $\leq d$; ring \emph{right $(n,d)$-cocoherent} with $id(C)\leq d$ $(n+1)$-copresented; $(n,d)$-cosemihereditary} whenever $0\rightarrow C\rightarrow E\rightarrow A\rightarrow 0$ e...

Journal: :Missouri Journal of Mathematical Sciences 2019

Journal: :Journal of Algebra 1995

Journal: :Advances in Mathematics 1987

Journal: :Proceedings of the American Mathematical Society 1987

Journal: :International Journal of Mathematics and Mathematical Sciences 2008

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