摘要
利用S-系的相对平坦性思想,给出了满足条件(PA)、(EA)和强A-平坦的一类单循环S-系的等价刻画.
Some equaivalent descriptions of simple circle S-acts,which satisfies the condition (PA), (EA) or strong A-fiat respectively, are obtained by the relative flatness concept.
出处
《西北师范大学学报(自然科学版)》
CAS
2007年第5期12-14,共3页
Journal of Northwest Normal University(Natural Science)