Covers and envelopes by#-ℱ complexes
L Liang, N Ding, G Yang - Communications in Algebra, 2011 - Taylor & Francis
Let ℱ be a class of R-modules.#-ℱ complexes are introduced and investigated in this article.
We say that a complex C is a#-ℱ complex if all terms C i are in ℱ for i∈ ℤ, and we denote …
We say that a complex C is a#-ℱ complex if all terms C i are in ℱ for i∈ ℤ, and we denote …
Cartan-Eilenberg Gorenstein flat complexes
G Yang, L Liang - Mathematica Scandinavica, 2014 - JSTOR
In this paper, we study Cartan-Eilenberg Gorenstein flat complexes. We show that over
coherent rings a Cartan-Eilenberg Gorenstein flat complex can be gotten by a so-called …
coherent rings a Cartan-Eilenberg Gorenstein flat complex can be gotten by a so-called …
复形的#-内射包络的存在性
姊佸姏, 鏉ㄥ垰 - 数学学报, 2019 - actamath.cjoe.ac.cn
令dwI 表示所有#-内射左R-模复形构成的类(即内射左R-模的复形构成的类).
本文证明了在左诺特环R 上(⊥(dwI), dwI) 是完备的内射余挠对. 特别地, 我们得到每个左R …
本文证明了在左诺特环R 上(⊥(dwI), dwI) 是完备的内射余挠对. 特别地, 我们得到每个左R …
A note on dg-Gorenstein injective covers
A Iacob - Acta Mathematica Universitatis Comenianae, 2022 - iam.fmph.uniba.sk
We consider a ring R such that the class of Gorenstein injective modules is closed under
direct limits. We prove that the class of dg-Gorenstein injective complexes is covering in Ch …
direct limits. We prove that the class of dg-Gorenstein injective complexes is covering in Ch …
On#-injective complexes
L Liang, N Ding - Journal of Algebra and Its Applications, 2012 - World Scientific
A complex C of R-modules is called#-injective if all terms Ci are injective R-modules for i∈
ℤ. In this paper, we first give some characterizations and properties of#-injective complexes …
ℤ. In this paper, we first give some characterizations and properties of#-injective complexes …
Complexes of FP-injective modules
Y Geng - Algebra Colloquium, 2010 - World Scientific
In this paper, we study the class of complexes of FP-injective left R-modules. It is shown that
the pair is a complete cotorsion pair. If R is a left coherent ring, it is proved that every …
the pair is a complete cotorsion pair. If R is a left coherent ring, it is proved that every …
Special precovers and preenvelopes of complexes
Z Wang, Z Liu - arXiv preprint arXiv:1301.6595, 2013 - arxiv.org
The notion of an $\mathcal {L} $ complex (for a given class of $ R $-modules $\mathcal {L} $)
was introduced by Gillespie: a complex $ C $ is called $\mathcal {L} $ complex if $ C $ is …
was introduced by Gillespie: a complex $ C $ is called $\mathcal {L} $ complex if $ C $ is …
The Existence of#-injective Envelopes of Complexes
L LIANG, Y Gang - Acta Mathematica Sinica, Chinese Series, 2019 - actamath.cjoe.ac.cn
Let dwI denote the class of#-injective complexes of left R-modules (ie, complexes of injective
left R-modules). We prove that over left noetherian rings R, the pair (⊥(dwI), dwI) is a perfect …
left R-modules). We prove that over left noetherian rings R, the pair (⊥(dwI), dwI) is a perfect …
Cartan-Eilenberg projective, injective and flat complexes
X Zhai, C Zhang - Czechoslovak Mathematical Journal, 2016 - Springer
Let R be an associative ring with identity and F a class of R-modules. In this article: we first
give a detailed treatment of Cartan-Eilenberg F complexes and extend the basic properties …
give a detailed treatment of Cartan-Eilenberg F complexes and extend the basic properties …