شماره ركورد كنفرانس :
5440
عنوان مقاله :
New results on Condition (P′) and (PF′′)-cover
پديدآورندگان :
KHAMECHI P. p.khamechi@velayat.ac.ir Faculty of Sciences, Velayat University, Iranshahr, Iran
كليدواژه :
Acts , Condition (PF′′) , Covers
عنوان كنفرانس :
بيست و هفتمين سمينار جبر ايران
چكيده فارسي :
In this paper, we give a necessary and sufficient condition for cyclic act to have a (PF′′)-cover and give some classes of monoids that all cyclic right S-acts have a Condition (PF′′)-cover. ##We show that every weakly pullback flat cover is also (PF′′)-cover and every (PF′′)-cover is (P′)- cover, but the converses are not true.
