RINGS OVER WHICH CYCLICS ARE DIRECT SUMS OF PROJECTIVE AND CS OR NOETHERIAN*
Glasgow mathematical journal, Tome 52 (2010) no. A, pp. 103-110
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R is called a right WV-ring if each simple right R-module is injective relative to proper cyclics. If R is a right WV-ring, then R is right uniform or a right V-ring. It is shown that a right WV-ring R is right noetherian if and only if each right cyclic module is a direct sum of a projective module and a CS (complements are summands, a.k.a. ‘extending modules’) or noetherian module. For a finitely generated module M with projective socle over a V-ring R such that every subfactor of M is a direct sum of a projective module and a CS or noetherian module, we show M = X ⊕ T, where X is semisimple and T is noetherian with zero socle. In the case where M = R, we get R = S ⊕ T, where S is a semisimple artinian ring and T is a direct sum of right noetherian simple rings with zero socle. In addition, if R is a von Neumann regular ring, then it is semisimple artinian.
HOLSTON, C. J.; JAIN, S. K.; LEROY, A. RINGS OVER WHICH CYCLICS ARE DIRECT SUMS OF PROJECTIVE AND CS OR NOETHERIAN*. Glasgow mathematical journal, Tome 52 (2010) no. A, pp. 103-110. doi: 10.1017/S0017089510000200
@article{10_1017_S0017089510000200,
author = {HOLSTON, C. J. and JAIN, S. K. and LEROY, A.},
title = {RINGS {OVER} {WHICH} {CYCLICS} {ARE} {DIRECT} {SUMS} {OF} {PROJECTIVE} {AND} {CS} {OR} {NOETHERIAN*}},
journal = {Glasgow mathematical journal},
pages = {103--110},
year = {2010},
volume = {52},
number = {A},
doi = {10.1017/S0017089510000200},
url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000200/}
}
TY - JOUR AU - HOLSTON, C. J. AU - JAIN, S. K. AU - LEROY, A. TI - RINGS OVER WHICH CYCLICS ARE DIRECT SUMS OF PROJECTIVE AND CS OR NOETHERIAN* JO - Glasgow mathematical journal PY - 2010 SP - 103 EP - 110 VL - 52 IS - A UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000200/ DO - 10.1017/S0017089510000200 ID - 10_1017_S0017089510000200 ER -
%0 Journal Article %A HOLSTON, C. J. %A JAIN, S. K. %A LEROY, A. %T RINGS OVER WHICH CYCLICS ARE DIRECT SUMS OF PROJECTIVE AND CS OR NOETHERIAN* %J Glasgow mathematical journal %D 2010 %P 103-110 %V 52 %N A %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000200/ %R 10.1017/S0017089510000200 %F 10_1017_S0017089510000200
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