(n, d)-phantom 与(n, d)-Ext-phantom 态射
张春霞， 唐强玲 - 《 山东大学学报(理学版)》, 2023 - lxbwk.njournal.sdu.edu.cn
… the concepts of (nꎬd)-phantom and (nꎬd)-Ext-phantom morphismsꎬ and give their some …
Covering ideals of morphisms and module representations of the quiver A2 [J]. J Pure Appl …
Covering ideals of morphisms and module representations of the quiver A2 [J]. J Pure Appl …
态射和短正合列的预包络关于直和的封闭性
刘诗瑶， 杨晓燕 - Pure Mathematics, 2023 - hanspub.org
: 本文利用左R-模的预包络关于直和的封闭性, 研究了态射和短正合序列的预包络关于直和的
封闭性. Abstract: In this paper, we study that the preenvelopes of morphisms and short exact …
封闭性. Abstract: In this paper, we study that the preenvelopes of morphisms and short exact …