On n-phantom and n-Ext-phantom Morphisms

K Lan, B Lu - Taiwanese Journal of Mathematics, 2021 - JSTOR
This paper extends many conclusions based on phantom envelopes and Ext-phantom
covers of modules, and we find that many important properties still hold after replacing …

[PDF][PDF] 关于n-phantom-态射和n-Ext-phantom-态射的刻画

兰开阳, 卢博 - 浙江大学学报(理学版), 2021 - zjujournals.com
关于n-phantom-态射和n-Ext-phantom-态射的刻画 Page 1 浙江大学学报(理学版) Journal of
Zhejiang University(Science Edition) http://www.zjujournals.com/sci 第48 卷第6 期 2021 年 …