applications of epi-retractable modules

نویسندگان

bashishth muni pandeya

avanish kumar chaturvedi

ashok ji gupta

چکیده

an r-module m is called epi-retractable if every submodule of mr is a homomorphic image of m. it is shown that if r is a right perfect ring, then every projective slightly compressible module mr is epi-retractable. if r is a noetherian ring, then every epi-retractable right r-module has direct sum of uniform submodules. if endomorphism ring of a module mr is von-neumann regular, then m is semi-simple if and only if m is epi-retractable. if r is a quasi frobenius ring, then r is a right hereditary ring if and only if every injective right r-module is semi-simple. a ring r is semi-simple if and only if r is right hereditary and every epiretractable right r-module is projective. moreover, a ring r is semi-simple if and only if r is a pri and von-neumann regular.

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Applications of epi-retractable modules

An R-module M is called epi-retractable if every submodule of MR is a homomorphic image of M. It is shown that if R is a right perfect ring, then every projective slightly compressible module MR is epi-retractable. If R is a Noetherian ring, then every epi-retractable right R-module has direct sum of uniform submodules. If endomorphism ring of a module MR is von-Neumann regular, then M is semi-...

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Erratum: Applications of epi-retractable and co-epi-retractable modules

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A module M is called epi-retractable if every submodule of M is a homomorphic image of M. Dually, a module M is called co-epi-retractable if it contains a copy of each of its factor modules. In special case, a ring R is called co-pli (resp. co-pri) if RR (resp. RR) is co-epi-retractable. It is proved that if R is a left principal right duo ring, then every left ideal of R is an epi-retractable ...

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applications of epi-retractable and co-epi-retractable modules

a module m is called epi-retractable if every submodule of m is a homomorphic image of m. dually, a module m is called co-epi-retractable if it contains a copy of each of its factor modules. in special case, a ring r is called co-pli (resp. co-pri) if rr (resp. rr) is co-epi-retractable. it is proved that if r is a left principal right duo ring, then every left ideal of r is an epi-retractable ...

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erratum: applications of epi-retractable and co-epi-retractable modules

in this errata, we reconsider and modify two propositions and their corollaries which were written on epi-retractable and co-epi-retractable modules.

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عنوان ژورنال:
bulletin of the iranian mathematical society

ناشر: iranian mathematical society (ims)

ISSN 1017-060X

دوره 38

شماره 2 2012

میزبانی شده توسط پلتفرم ابری doprax.com

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