When do Foxby classes coincide with the classes of modules of finite Gorenstein dimensions? (Q2374205)
From MaRDI portal
scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | When do Foxby classes coincide with the classes of modules of finite Gorenstein dimensions? |
scientific article |
Statements
When do Foxby classes coincide with the classes of modules of finite Gorenstein dimensions? (English)
0 references
14 December 2016
0 references
It is well known that, over a commutative Noetherian local Cohen-Macaulay ring admitting a dualizing module, the Auslander class (resp., Bass class) is precisely the class of modules with finite Gorenstein projective (resp., Gorenstein injective) dimension (see [\textit{E. E. Enochs} et al., Trans. Am. Math. Soc. 348, No. 8, 3223--3234 (1996; Zbl 0862.13004)]). This result was generalized by \textit{E. E. Enochs} et al. [Proc. Edinb. Math. Soc., II. Ser. 48, No. 1, 75--90 (2005; Zbl 1094.16001)]. They proved that the above result is true over a Noetherian (not necessarily commutative) \(n\)-perfect ring with a dualizing bimodule. In the paper under review, the authors further generalize the above result by considering Foxby classes with respect to a given module (not necessarily a dualizing module). For a left \(R\)-module \(C\) with some extra conditions on \(C\) and the endomorphism ring \(S=\text{End}_R(C)\), they give sufficient and necessary conditions for the Auslander class (resp., Bass class) with respect to \(C\) to be precisely the class of modules with finite Gorenstein projective (resp., Gorenstein injective) dimension. The authors also study when the Auslander class and Bass class with respect to \(C\) are (pre)covering and (pre)enveloping, and give some sufficient conditions.
0 references
Auslander class
0 references
Bass class
0 references
Gorenstein dimension
0 references
cover
0 references
envelope
0 references