Supported by Natural Science Foundation of China (Grant No. A0324656);Natural Science Foundation of Fujian Province (Grant No. 2009J01003);Scientific Research Foundation of Fujian Provincial Department of Science and Technology (Grant No. 2007F5038);Foundation of Fujian Normal University (Grant Nos. 2008100209, 09A004)
Assume that S is an almost excellent extension of R. Using functors HomR(S,-) and -×R S, we establish some connections between classes of modules lR and lS, cotorsion pairs (AR, BR) and (AS, BS). If lS is a T-e...