Extension groups between atoms in abelian categories
Extension groups between atoms in abelian categories
复制标题
阿贝尔范畴中原子之间的扩展群
DOI:
10.1016/j.jpaa.2021.106669
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Ryo Kanda
中科院分区:
文献类型:
--
作者:
Ding Ma;Koji Tasaka;Ryo Kanda
We introduce the extension groups between atoms in an abelian category. For a locally noetherian Grothendieck category, the localizing subcategories closed under injective envelopes are characterized in terms of those extension groups. We also introduce the virtual duals of the extension groups between atoms to measure the global dimension of the category. A new topological property of atom spectra is revealed and it is used to relate the projective dimensions of atoms with the Krull-Gabriel dimensions. As a byproduct of the topological observation, we show that there exists a spectral space that is not homeomorphic to the atom spectrum of any abelian category.
登录
查看更多内容
DOI:
10.1007/3-540-27950-4
发表时间:
2005-10
期刊:
--
影响因子:
--
作者:
柏原 正樹;P. Schapira
通讯作者:
柏原 正樹;P. Schapira
影响因子:
0.7
作者:
H. H. Storrer
通讯作者:
H. H. Storrer
影响因子:
0.6
作者:
Z. Papp
通讯作者:
Z. Papp
影响因子:
0.7
作者:
Z. Papp
通讯作者:
Z. Papp
影响因子:
0.9
作者:
萩生翔大;神崎素樹;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda;Ryo Kanda
通讯作者:
Ryo Kanda