Let M be a right R-module. Define Z (N) ( 8 M (N )) to be the set of elements n e N for any R- module N in a[M] such that nR is an M-small (respectively 8-M-small) modüle. In this note it is proved that M is a GCO-module if and only if every M-small modüle in o[M] is M-projective if and only if every *
8-M-small modüle in o[M] is M-projective. Also, if M/8 M (M) is semisimple then M is a GCO-module if and only if M is an Sl-module.
Primary Language | English |
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Subjects | Mathematical Sciences |
Journal Section | Research Articles |
Authors | |
Publication Date | January 1, 2002 |
Submission Date | January 1, 2002 |
Published in Issue | Year 2002 Volume: 51 Issue: 02 |
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics.
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