Torsion theories of pseudo-regular S -systems

作     者：QIU Derong(Center for Advanced Study, Tsinghua University, Beijing 100084, China) 

作者机构：Tsing Hua Univ Ctr Adv Study Beijing 100084 Peoples R China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2002年第12卷第2期

页      面：68-70页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

主　　题：pseudo-regular S-system torsion theory quasi-filter stable torsion theory Lambek torsion theory. 

摘      要：The concept of pseudo-regular S-system is introduced. A torsion theory τu = ( Us, Us) with its torsion class Us consisting of pseudo-regular S-systems is constructed. Its corresponding quasi-filter is completely described. A number of results on the relations between τu and two special torsion theories, the stable and Lambek torsion theories, are obtained.