Ding 内射Ext-Phantom 态射
刘明珠， 杨晓燕 - Pure Mathematics, 2022 - hanspub.org
… the Ding injective Ext-phantom morphisms, discusses basic homological properties of
Ding injective Ext-phantom morphisms, and proves the collection of all Ding injective Ext-phantom …
Ding injective Ext-phantom morphisms, and proves the collection of all Ding injective Ext-phantom …
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
… Abstract: In this paper, we study that the preenvelopes of morphisms and short exact
sequences are closed under direct sums using the fact that the preenvelope of left R-module is …
sequences are closed under direct sums using the fact that the preenvelope of left R-module is …
(n, d)-(Ext)-phantom 态射与(n, d)-环.
余君丽， 张春霞 - Acta Scientiarum Naturalium Universitatis …, 2024 - search.ebscohost.com
… d)-phantom 态射 与Mor-R 的全子范畴(n,d)-Ext-phantom 态射均… 以下结论揭示了态射的(n,d)-phantom
与(n,d)-Ext-phantom 态射… Precovers and preenvelopes by phantom and Ext-phantom …
与(n,d)-Ext-phantom 态射… Precovers and preenvelopes by phantom and Ext-phantom …