摘要
证明了在Morita对偶之下,自反模是(n,d)-内射的((n,d)-投射的)当且仅当它的Morita偶是(n,d)-投射的((n,d)-内射的),以及右(n,d)-环与左余(n,d)-环,(弱)n-遗传模与(弱)n-余遗传模都是互为对偶的.特别地,自反模是内射的(余遗传的)当且仅当它的偶是(0,0)-投射的(0-遗传的).
Under Morita duality, every reflexive module is (n,d)- injective ((n,d)- projective) if and only if its Morita dual is (n,d)-projective ((n,d) -injective) ; right (n,d) -rings and left co- (n, d) -rings, (week) n-hereditary module and (week) n-cohereditary module are Morita dualities. In particular, every reflexive module is injective (cohereditary) if and only if its dual is (0, 0) -projective (0-hereditary).
出处
《福建师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2006年第3期1-5,共5页
Journal of Fujian Normal University:Natural Science Edition
基金
福建省教育厅A类科技项目(JA05212)
福建师范大学青年教师科研扶苗基金项目(F029)