Phantom Envelopes and -Phantom Covers of Modules
L Mao - Bulletin of the Iranian Mathematical Society, 2020 - Springer
We first prove that if a monomorphism is a phantom envelope of a left R-module, then its
cokernel is pure-projective; if R is a left coherent ring and an epimorphism is an Ext Ext …
cokernel is pure-projective; if R is a left coherent ring and an epimorphism is an Ext Ext …
Phantom Envelopes and Ext-Phantom Covers of Modules.
L Mao - Bulletin of the Iranian Mathematical Society, 2020 - search.ebscohost.com
We first prove that if a monomorphism is a phantom envelope of a left R-module, then its
cokernel is pure-projective; if R is a left coherent ring and an epimorphism is an Ext-phantom …
cokernel is pure-projective; if R is a left coherent ring and an epimorphism is an Ext-phantom …