次弱平坦系的特征  

Less (Principally) weakly flat acts

作　　者：梁俊平 

出　　处：《龙岩师专学报》2000年第3期6-7,15,共3页Journal of Longyan Teachers College

摘　　要：引入次（主）弱平坦系的概念，给出了次主弱平坦Ｓ－系的特征刻划。Less (principally) weally An acts are the main obiects considered in this paper. After considering their properties, a characterization of less principally waily flat acts is given.

关 键 词：弱正则幺半群 平坦S-系 次弱平坦系 特征 

分 类 号：O152.7[理学—数学]