Over a commutative noetherian ring, we introduce a generalization of
Gorenstein projective and injective modules, which we call, respectively,
n-Gorenstein projective and injective modules. These last two classes
of modules give us a new characterization of Gorenstein rings in terms
of top local cohomology modules of flat modules. We also utilize the
n-Gorenstein injective dimension to study an open question of Takahashi. Furthermore, we prove that a nonzero finite module with finite
n-Gorenstein projective dimension satisfies the Auslander-Bridger formula.
n-Gorenstein projective module n-Gorenstein injective module n-Gorenstein projective dimension n-Gorenstein injective dimension
Primary Language | English |
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Subjects | Mathematical Sciences |
Journal Section | Mathematics |
Authors | |
Publication Date | December 1, 2015 |
Published in Issue | Year 2015 Volume: 44 Issue: 6 |