C -coherent rings, C -semihereditary rings and C -regular rings
Z Zhu - Studia Scientiarum Mathematicarum Hungarica, 2013 - akjournals.com
Let C be a class of some finitely presented left R-modules. A left R-module M is called C-
injective, if Ext R 1 (C, M)= 0 for each C∈ C. A right R-module M is called C-flat, if Tor 1 R …
injective, if Ext R 1 (C, M)= 0 for each C∈ C. A right R-module M is called C-flat, if Tor 1 R …
C-COHERENT RINGS, C-SEMIHEREDITARY RINGS AND C-REGULAR RINGS
Z ZHU - Studia Scientiarum Mathematicarum Hungarica, 2013 - akjournals.com
Let C be a class of some finitely presented left R-modules. A left R-module M is called C-
injective, if Ext1 R (C, M)= 0 for each C∈ C. A right R-module M is called C-flat, if TorR 1 (M …
injective, if Ext1 R (C, M)= 0 for each C∈ C. A right R-module M is called C-flat, if TorR 1 (M …
C-Coherent rings, C-semihereditary rings and C-regular rings
Z Zhu - Studia Scientiarum Mathematicarum Hungarica, 2013 - go.gale.com
Let C be a class of some finitely presented left R-modules. A left R-module M is called C-
injective, if [Ext. sup. 1. sub. R](C, M)= 0 for each C [member of] C. A right R-module M is …
injective, if [Ext. sup. 1. sub. R](C, M)= 0 for each C [member of] C. A right R-module M is …