منابع مشابه
On radical formula and Prufer domains
In this paper we characterize the radical of an arbitrary submodule $N$ of a finitely generated free module $F$ over a commutatitve ring $R$ with identity. Also we study submodules of $F$ which satisfy the radical formula. Finally we derive necessary and sufficient conditions for $R$ to be a Pr$ddot{mbox{u}}$fer domain, in terms of the radical of a cyclic submodule in $Rbigopl...
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1. Using variational techniques we have found conditions which insure the existence of trajectories to conservative dynamical systems which wind around singularities of the potential and are of the following four types: (la) periodic trajectories cutting arbitrary small neighborhoods of the singularities; (lb) periodic trajectories having arbitrary given period; (2a) trajectories joining two fi...
متن کاملSEMI-RADICALS OF SUB MODULES IN MODULES
Let be a commutative ring and be a unitary module. We define a semi prime sub module of a module and consider various properties of it. Also we define semi-radical of a sub module of a module and give a number of its properties. We define modules which satisfy the semi-radical formula and present the existence of such a module.
متن کاملSemi-radicals of Sub modules in Modules
Abstract: Let be a commutative ring and be a unitary module. We define a semiprime submodule of a module and consider various properties of it. Also we define semi-radical of a submodule of a module and give a number of its properties. We define modules which satisfy the semi-radical formula and present the existence of such a module.
متن کاملModules for which every non-cosingular submodule is a summand
A module $M$ is lifting if and only if $M$ is amply supplemented and every coclosed submodule of $M$ is a direct summand. In this paper, we are interested in a generalization of lifting modules by removing the condition"amply supplemented" and just focus on modules such that every non-cosingular submodule of them is a summand. We call these modules NS. We investigate some gen...
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ژورنال
عنوان ژورنال: International Journal of Contemporary Mathematical Sciences
سال: 2007
ISSN: 1314-7544
DOI: 10.12988/ijcms.2007.07002