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黄兆泳
数学学报,2002,45(1):127~138,-0001,():
-1年11月30日
本文引进了(极小)逼近扩张,证明了极小逼近扩张在Gorenstein代数上的存在性和唯一性,并给出了极小逼近扩张的一个应用。
Gorenstein代数, 极小逼近扩张, CM模
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黄兆泳, Zhaoyong Huang z
2000 Mathematics Subject Classi-cation. 16E10, 16E30, 16D90.,-0001,():
-1年11月30日
Let A and γ be artin algebras and Uγ a faithfully balanced selforthogonal bimodule. We show that the U-dominant dimensions of U and Uγ are identical. As applications of the results obtained, we give some characterizations of the double U-dual functors preserving monomorphisms and being left exact respectively.
U-dominant dimension,, at dimension,, faithfully balanced selforthogonal bimodules,, double U-dual functors.,
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【期刊论文】Tilting modules of finite projective dimension and a generalization of ∗-modules☆
黄兆泳, Jiaqun Wei, *, , Zhaoyong Huang, Wenting Tong, and Jihong Huang
Journal of Algebra 268(2003)404-418,-0001,():
-1年11月30日
ive dimension ≤1 coincide with ∗-modules generating all injectives. This result is extended in this paper. Namely, we generalize ∗-modules to socalled ∗n-modules and show that tilting modules of projective dimension ≤n are ∗n-modules which n-present all injectives.
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【期刊论文】Selforthogonal modules with finite injective dimension II
黄兆泳, Zhaoyong Huang
Journal of Algebra 264(2003)262-268,-0001,():
-1年11月30日
Let Λ be a left and right Artin ring and ΛωΛ a faithfully balanced selforthogonal bimodule. We give a sufficient condition that the injective dimension of ωΛ is finite implies that of Λω is also finite.
Selforthogonal modules, Cotilting modules, Injective dimensiona
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【期刊论文】Selforthogonal modules with finite injective dimension
黄兆泳, HUANG Zhaoyong
SCIENCE IN CHINA (Series A), 2000, 43 (11): 1174~1181,-0001,():
-1年11月30日
The category consisting of finitely generated modules which are left orthogonal with a cotilting bimodule is shown to be functorially finite. The notion of left orthogonal dimension is introduced, and then a necessary and sufficient condition of selforthogonal modules having finite injective dimension and a characterization of cotilting modules are given.
injective dimension,, selforthogonal modules,, cotilting (, bi), modules,, homologically finite subcategories,, left orthogonal dimension.,
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