In this paper, we mainly discuss the relations and the properties of Wnmodules and dual exact sequences, and give some applications on the finitely presented modules over coherent rings. The obtained results generalize the work in [4].%本文讨论了Wn-模与对偶正合列的性质和关系,且给出了它们在讨论凝聚环上的有限表现模时的一些应用.所得结果推广了文献[5]等所得的结果.
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