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 …
性. Abstract: In this paper, we study that the preenvelopes of morphisms and short exact …