Extension groups between atoms and objects in locally noetherian Grothendieck category
Extension groups between atoms and objects in locally noetherian Grothendieck category
复制标题
局部诺特格罗腾迪克范畴中原子和物体之间的可拓群
DOI:
10.1016/j.jalgebra.2014.09.009
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发表时间:
2015
影响因子:
0.9
通讯作者:
Ryo Kanda
中科院分区:
文献类型:
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作者:
萩生翔大;神崎素樹;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda
We define the extension group between an atom and an object in a locally noetherian Grothendieck category as a module over a skew field. We show that the dimension of thei-th extension group between an atom and an object coincides with thei-th Bass number of the object with respect to the atom. As an application, we give a bijection between the E-stable subcategories closed under arbitrary direct sums and direct summands and the subsets of the atom spectrum and show that such subcategories are also closed under extensions, kernels of epimorphisms, and cokernels of monomorphisms. We show some relationships to the theory of prime ideals in the case of noetherian algebras.
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影响因子:
0.7
作者:
H. H. Storrer
通讯作者:
H. H. Storrer
影响因子:
1.7
作者:
B. Mitchell
通讯作者:
B. Mitchell
影响因子:
0.8
作者:
P. Gabriel;U. Oberst
通讯作者:
U. Oberst
DOI:
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发表时间:
2011
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影响因子:
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作者:
Ryo Kanda
通讯作者:
Ryo Kanda
DOI:
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发表时间:
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期刊:
影响因子:
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作者:
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