由对象确定的态射:Artin代数上模的情形
表示论
2012-02-29 v2 环与代数
摘要
我们研究Artin代数上的有限生成模。在其《费城笔记》中,M. Auslander证明了任何同态都由某个模C右确定,但他写下的关于C的公式需要修正。本文现在包含了关于态射右确定子的主要结果的完整且直接的证明。我们讨论了极小右确定子的不可分解投射直和项的作用,并对那些由不含任何非零投射直和项的模所右确定的态射进行了详细分析。
引用
@article{arxiv.1110.6734,
title = {Morphisms determined by objects: The case of modules over artin algebras},
author = {Claus Michael Ringel},
journal= {arXiv preprint arXiv:1110.6734},
year = {2012}
}
备注
The paper has been revised and expanded. The terminology has been changed as follows: "essential kernel" is replaced by "intrinsic kernel", "determinator" is replaced by "determiner". Sections 3, 4 and 5 are new