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4 papers · 1 filter
On Cotorsion pairs of chain complexes
Gang Yang, Ruijuan Du
In the paper we first construct a new cotorsion pair, in the category of chain complexes, from two given cotorsion pairs in the category of modules, and then we consider completene…
All modules have Gorenstein flat precovers
Gang Yang, Li Liang
It is known that every -module has a flat precover. We show in the paper that every -module has a Gorenstein flat precover.
Stable homology over associative rings
Olgur Celikbas, Lars Winther Christensen, Li Liang +1
We analyze stable homology over associative rings and obtain results over Artin algebras and commutative noetherian rings. Our study develops similarly for these classes; for simpl…
Effects of high-order operators in non-relativistic Lifshitz holography
Xinwen Wang, Jie Yang, Miao Tian +3
In this paper, we study the effects of high-order operators on the non-relativistic Lifshitz holography in the framework of the Hořava-Lifshitz (HL) theory of gravity, which natura…