PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.) Vol. 29(43), pp. 1521 (1981) 

$Q_r$SEMIGROUPSStojan Bogdanovi\'cEkonomski fakultet, Nis, YugoslaviaAbstract: Here, we give the definition of $Q_r$semigroup i.e., a semigroup in which every proper right ideal is a power joined semigroup and we give as well some characterizations of weakly commutative $Q_r$semigroups, Full text of the article:
Electronic fulltext finalized on: 3 Nov 2001. This page was last modified: 16 Nov 2001.
© 2001 Mathematical Institute of the Serbian Academy of Science and Arts
