2020/97/3-4 (7)
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DOI: 10.5486/PMD.2020.8777
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pp. 367-380
The structures of dual modules over formal triangular matrix rings
Abstract:
Dual modules of modules over formal triangular matrix rings are described, and this description is used to characterize left coherent, left coherent right perfect, left Kasch rings, left $PS$ rings and left $FS$ rings.
Keywords: formal triangular matrix ring, dual module, coherent ring
Mathematics Subject Classification: 16D20, 16D90, 16P70, 16S50