Two generalizations of projective modules and their applications
Two generalizations of projective modules and their applications
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射影模的两种推广及其应用
DOI:
10.1016/j.jpaa.2014.07.025
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发表时间:
2015-06
影响因子:
0.8
通讯作者:
H Kim
中科院分区:
文献类型:
--
作者:
Fanggui Wang;H Kim
Let R be a commutative ring, M be an R-module, and w be the so-called w-operation on R. Set S w={f∈ R [X]| c (f) w= R}, where c (f) denotes the content of f. Let R {X}= R [X] S w and M {X}= M [X] S w be the w-Nagata ring of R and the w-Nagata module of M respectively. Then we introduce and study two concepts of w-projective modules and w-invertible modules, which both generalize projective modules. To do so, we use two main methods of which one is to localize at maximal w-ideals of R and the other is to utilize w-Nagata modules over w-Nagata rings. In particular, it is shown that an R-module M is w-projective of finite type if and only if M {X} is finitely generated projective over R {X}; M is w-invertible if and only if M {X} is invertible over R {X}. As applications, it is shown that R is semisimple if and only if every R-module is w-projective and that, in a Q 0-PVMR, every finite type semi-regular module is w-projective.
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DOI:
10.5036/bfsiu1968.12.9
发表时间:
1980-05
期刊:
Bulletin of The Faculty of Science, Ibaraki University. Series A, Mathematics
影响因子:
--
作者:
Ryuki Matsuda
通讯作者:
Ryuki Matsuda
影响因子:
0.7
作者:
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通讯作者:
Stelios A. Charalambides
影响因子:
0.8
作者:
T. G. Lucas
通讯作者:
T. G. Lucas
影响因子:
0.3
作者:
Hwankoo Kim;E. S. Kim;Y. S. Park
通讯作者:
Hwankoo Kim;E. S. Kim;Y. S. Park
DOI:
10.1016/0016-0032(61)90240-x
发表时间:
2016-04
期刊:
--
影响因子:
--
作者:
Tomi Pannila
通讯作者:
Tomi Pannila