半模范畴中Hom的左正合性  

THE LEFT EXACTNESS OF HOM FUNCTOR IN THE CATEGORY OF SEMIMODULES

作　　者：包玉宝[1] 

机构地区：[1]山东师范大学数学系,济南250014

出　　处：《山东师范大学学报（自然科学版）》2003年第1期7-10,共4页Journal of Shandong Normal University(Natural Science)

摘　　要：利用半模的差模定义了半模同态序列的正合 ,讨论了Hom函子的左正合性 .In this paper,the exactness of a sequence of R-homomorphisms of semimodules similiar to the corresponding construction for modules on basis of the module of differences of the R-semimodules was defined.The left exactness of Hom functor was discussed.

关 键 词：半环 半模 范畴 差模 同态 HOM函子 左正合性 可消半模 

分 类 号：O153.3[理学—数学]