A degeneration-like order for modules

A degeneration-like order for modules
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模块的类似退化的顺序

DOI:
10.1007/s000130050288
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发表时间:
1998
影响因子:
0.6
通讯作者:
G. Zwara
G. Zwara
中科院分区:
数学4区
文献类型:
--
作者:
G. Zwara

文献摘要

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设Abe是代数闭域上的有限维代数. Riedtmann在[4]中证明了:对任意有限维A-模的正合序列,M退化为N。证明了由上述序列的存在性所定义的关系是有限维A-模同构类集合上的偏序。
LetAbe a finite dimensional algebra over an algebraically closed field. In [4] Riedtmann has proved that for any exact sequenceof finite dimensionalA-modules,Mdegenerates toN. We prove that the relationdefined by the existence of the above sequence is a partial order on the set of isomorphism classes of finite dimensionalA-modules.