On Gorenstein Algebras

On Gorenstein Algebras
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DOI:
10.1007/978-3-0348-8658-1_16
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发表时间:
1991
期刊:
Journal of Natural Science of Heilongjiang University
影响因子:
--
通讯作者:
D. Happel
D. Happel
中科院分区:
其他
文献类型:
--
作者:
D. Happel

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设A是某一固定代数闭域上的有限维代数(结合的,带单位的)。设modA是有限生成的左A-模范畴。当D=Homk(-,k)时,我们表示关于基场的标准对偶。ThenAD(AA)是MODA的内射协生成子。对于任意模A-模AX,我们用proj.dimAX(resp.In.dimAX)投影维度(分别为模AX的内射维度)。
LetAbe a finite-dimensionalk-algebra (associative, with unit) over some fixed algebraically closed fieldk. Let modAbe the category of finitely generated left A-modules. WithD= Homk(—,k) we denote the standard duality with respect to the ground field. ThenAD(AA) is an injective cogenerator for modA. For an arbitraryA-moduleAXwe denote by proj.dimAX(resp. inj.dimAX) the projective dimension (resp. the injective dimension) of the moduleAX.