Based on these modules,it provides some characterizations of right coherent rings,right fp_n-hereditary rings and right fp_n-regular rings.
定义了比平坦模和FP-内射模更广的一类模,即fpn-内射模和fpn-平坦模,给出了其一些基本性质,并利用它们刻划了右coherent环、右fpn-遗传环和右fpn-正则环。
By using ρ T,we establish a representation for a right regular band.
借助 ρT 建立右正则带的一种表